Respect for admiting to some mistakes. It's refreshing to see someone both rationally defend their side and also admit to some mistakes and fix said mistakes.
Agreed, but can we also acknowledge how sad it is that this is the case? That the current social climate people are so ready to go down on their sword even in the face of opposing information. It’s ok to get things wrong, it is not ok to pretend you’re correct just to save face with the embarrassment of speaking on topics you have no education.
This was a greatly detailed video and I think we are pretty much on the same page! Thanks for the shoutout and going through the trouble of clarification. P.S. by the way, the resistor in your experiment didn't quite match the lien impedance, other you would get half your supply voltage right away. But I mean with such small capacitance and inductances, the probing itself could d have added some parasitic components to the lines. PPS: Like I said above "pretty much on the same page"! It is a complex subject, and I think some nuances could have been addressed better. Maybe Derek and I could sit together and react to nuances to clarify things!
Your original video has essentially achieved its purpose, you have generated a huge response, and then brought everyone together and the net outcome was to educate people in a deeper way than the average RUclips experience. Always appreciate your work man!
You still use the word "lightbulb" and "lights up" . Lightbulb passes the idea of incandescent bulb and "lights up" passes the idea of visible glow, so even after understanding what you explain, its still a clickbaity video and wrong.
Fantastic revisit! The animations and the simulations were spot-on, and great at showing the difference between the transient “first-second” effect, and the steady-state “rest of time” behavior. The whole “expanding loop of current” thing is a great way to phrase it, because after that poynting loop expands to match the actual physical loop of wire, then stuff starts to behave normally and all of the power is transmitted around the loop very close to the wire. I still hold that for this simple circuit, turning on a lightbulb with wires much smaller around than they are long, the effect of surface charge vs internal charge is negligible, so you can ignore any skin-effect stuff and say that “mobile” electrons are indeed pushing on other “mobile” electrons using their fields, but I totally agree that that’s a simplification, just a simplification that makes the intuition a lot easier. I also need to do some math about how far the average “electron” is displaced in order to build the initial charge distribution around some typical circuit elements - axial flow is the only way I understand those charge distributions getting built, and this whole endeavor has made me think hard about what that means. Someday when I think I understand it better I’ll edit up my pt.2 response video - thanks for the shoutout! I’ve got a great experiment in the works to show the “expanding poynting loop” 😁
Great to see you mentioned in this video you deserve a lot more recognition for your awesome videos, they need to be viewed by many more people, they're all great! Thanks for taking the time to create them!
This was a good revisit. After watching the original I didn’t feel like it made enough sense. It wasn’t until Alpha Phoenix posted his experiment that I understood the point you were actually aiming for.
Yes, I strongly disliked the way the first video showed the topic although I understood, what he was trying to say - mainly because I had watched the earlier video from Scienceasylum (some 2 years before veritassium). The Video of Alpha Phoenix was great and he as much too few followers for the quality content he makes. I hope this video sends much love (and subs) to AlphaPhoenix
Very good video. Remember there is a difference between what’s true, and what matters. Derek does a great job showing the whole truth of how circuits really work. The other videos that critique it do a great job at showing what matters. For most situations the small increase in voltage at 1/c seconds is negligible compared to the overall voltage needed to light the light bulb.
indeed a very enchanting thought experiment and enlightening conclusions I wonder how this would carry on to the quantum scales as well maybe we will find a great connection there as well
When describing circuits, most educators focus on what is happening at the subatomic level (which I love) but not the reasons why particles behave the way they do. I'm often left feeling like I missed something important in Science class - but something so rudimentary that no one will ever think to revisit it. You did an excellent job of anticipating many of my own questions (9:35). You also have the best motion graphics and editing I've seen for demonstrating this kind of information. I cannot thank you enough for this video!
I love the "peer review" reactions and the dialog. This is what we need. Everywhere, in science, politics etc. This is what the most powerful neurologic network looks like. Cheers ! Let's keep arguing ! Peacefully and intelligently if we can !
@@geospatial-KML Em radiation / radio waves are electric field perturbations. Photons _are_ electromagnetism, and with wavelengths this big over distances this small, they don't behave like particles, just fluctuating electric and magnetic fields. (That's why we call them radio waves, not radio photons, even though mathematically and physically they are the same.) These people are very intelligent and thoughtful. This isn't "complete foolishness" at all, especially not compared to the nonsense you hear from politicians and activists. Electricity is just inherently complex. Every analogy and description outside of pure mathematics runs into problems eventually.
@@jonmichaelgalindo I'd disagree. Politics and governance are about priorities and values, not maximizing or truth or efficiency. Else we'd burn all fossil or kill infirm people or do whatever maximally efficient yet evil act is possible. We're also dealing with people, who have no fixed truth like electricity does. Each person is infinitely complex, free thinking, with personal predilections that cannot be defined by immutable physical law. And this discussion is exactly the discussion you're discussing we need. Odd circularity.
Thank you for taking the time to produce and share this video. I've been an EE for close to 20 years and I'm a bit embarrassed to admit that only now am I starting to fully appreciate the importance of E and B fields in the behaviour of circuits.
Electricity is expanding electrons crossing over from the subatomic realm to atomic realm spiraling around the outside mostly- ‘skin effect ‘- mistakenly called E and B. Without reading you will remain ignorant. Sad, but true.
@@hughleyton693 In a real world system you will always have R L and C components in your power transmission equivalent circuit diagram…the L’s and C’ will provide temporary lossless storage of the energy that is not at that instance a current flowing through the load resistance.
A good transmission system will have low Resistance wires (as compared to the current they will carry. The reason for Power Transmission using 10,000+ volts is to keep the current in the wires much lower than if it were 120v. If the wires were perfect conductors, you would not need the extra high voltage
What a great time to be alive. Hundreds of years ago this discussion would be hold in books or university talks that were unavailable to the vast majority of society. Now, it is being done publically, everyone with access to internet can live this experience. It is amazing and it makes me feel like one 17th century student watching a heated physics debate.
If you had been at Pizza the other week, you could have heard everyone having a discussion LOUDLY about how an airplane flies. It was chaos, even a table next to us got in on it. OF COURSE they were all wrong. Here, there is a tool that measures the presence of the electrons (that you can buy at Home Depot) and it measures (checks) the wire for charge with no load (light off). Every electrician carries one.
By hundreds of years, you mean 20 years ago. 30 years ago you could only find this stuff in books and university talks. 20 years ago you could find it on the internet in niche global scholarly community discussions through text. Scholars discussing things with scholars still, just faster and further; on things like message boards and news groups. Just a handful of years after that we went from text discussion to full video and audio conversation
One might argue, what a bad time to be alive. Yes interlectual discussions have a great canvas to be painted on but if you compare the count of interlectual discussions to the count of moronic discussions by people who not even have a little understanding of what they are talking about, the time we live in just feels so off balance ....
Anybody critical or skeptical of science should watch and learn how this conversation has progressed. Props to Derek and the other RUclips creators for a beautiful demonstration of the scientific method.
“Science is wrong sometimes” was one of the most infuriating comments because the entire POINT of science is being wrong, and later learning WHY it is wrong. If science could only be correct it would be a fallacy that could not exist.
I suspect you are right. . . . Derek was very WRONG on this. . . . Not only do I work in the electrician field, in house and factory wiring, from 120V AC up through 480V 3-phase and 1 MVA Generators, I also work in the DC field, some DC I worked with was over 5,000 Amps... I work from DC, through 50 / 60 Hz right up through the Radio frequencies, and up into Microwave fre2quencies, so I know Derek's video is WRONG.
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Being humble to admit your mistakes and learn from other perspectives is what science is all about. No ego, just learning and discovering something new is amazing, our society needs more of this today
What I love about this is that this is truly an application of the scientific method within the scientific community. One person (or group) makes an experiment and hypothesis, peers challenge/prove/disprove the original hypothesis, and experiment with their own experiments, explanations, and hypotheses, and then communicate back to the scientific community. This results in further testable hypotheses and finally consensus. Those that question science sometime feel that science is a collection of edicts set in stone foisted upon them by the elite, but science is beautiful because it demands challenge for it work! I wish I were a writer to explain my thoughts better, but this video and situation surrounding it were simply too inspiring not to comment on.
THIS is what I enjoyed the most about this rebuttal. The clearly demonstrated effect of the "Scientific Method" for sure. I will admit that some of the electrical terminology escapes me but the responses to the first presentation from so many people of so many different education types and levels is awesome ! To know that a "simple" video posted online garners so much attention from such talented and dedicated people around the world is mind-blowing. There would be no way to tell people even 10 years ago that such a thing would be so commonplace and expected that nobody would notice or care that it happens all the time now. We should pause a few minutes and reflect on that. Truly amazing really. I wish I had access to this sort of thing those many years ago when I was growing up. All the knowledge that is available today ... the hard part now is to know what the question is. Hmmmm... 42 ?
Derek is like Russia right now, he fought all those "internet scientist NATO" alone, where they keep telling him and also the entire internet world that Derek is wrong, but Derek persists that they don't understand what he's trying to do
Fantastic to see experts, engineers, and scientists calling each other out in the interest of providing good science and accurate information. Then we see competitive and collaborative discussion that results in getting to the heart of the matter and getting as close as we can (for now) to the truth of it. Without vitriol or maliciousness.
This is the scientific method playing itself out in front of you...postulation of a hypothesis, design of experiment, publish results, hypothesis and experiment get peer-reviewed, watch those results be reproduced. So freaking awesome...even if it was kind of accidental. :)
I think a better electrical analogy is not water flow but *Pressurized Air* The *Energy* of electricity (NOT the electrons themselves but the energy) are like gas molecules at an equal but high and constant pressure throughout the circuit trying to disperse in all directions. The wires are like very efficient but slightly porus pipes, while the electrical device like a light bulb is a *Release Valve* that makes use of that energy. The pipes ( *Wires* ) efficiently funnel most of the air pressure ( *Energy* ) towards a release valve ( *Light Bulb* ) Note: The Switch that closes the circuit in this analogy is not a valve, it just allows for a *Pressurized Environment* for the pipes ( *Wires* ) and the releasing valve ( *Light Bulb* ) The Battery in this analogy would of course be the Pressure Tank, but of 2 valves where it's air (energy) will only escape when both of it's valves are alowed to pass through the 2 pipes ( + & - wires ) out through the same circuit, releasing pressure out through a valve (light bulb) in the form of heat and light. This analogy explains things like Voltage and Resistance like why wires are less efficient the longer, thinner, and less insulated they are. -Porus pipes will release more air the longer they are (more pipe = more pores) while thinner porus pipes can't are unable to pass as much pressure ( *current/voltage* ) causing resistance. If there is no valve in the closed circuit the pressure ( *Energy* ) can only be released through the pores within the pipes ( *Wires* ) eventually bursting the pipes ( *frying the circuit* ) from the amount of high pressure. Would this be a better analogy for layman's terms?
That's great and all but I've lost respect for him, because he proposes a lightbulb that comes on instantly with any flow of electricity. Such a light bulb would have 0 resistance, yet he uses a resistor as a stand in. What's more, such a light bulb would come on instantly in the presence of any moving magnetic field. In other words, turning such a light bulb off would be much more impressive feat than turning it on instantly with an insanely long superconducting wire connecting it. The fact that he doesn't realize that his physical experiment isn't even remotely analogous to his hypothesis despite even having a lot of back and forth with someone who's made videos pointing out those errors has made me lose respect. Scientists are self correcting, Veritasium is not.
I am a data scientist, a field completely unrelated to electrical engineering, I don't like when I see people just saying "he is wrong, and he is unreliable because of that". I see the inflated EGO in that person. But when you see an active collaboration, people making experiments, sharing knowledge with the community, watching others videos, explaining concepts... That, people, that is the essence of science. And I really love that!! ❤ Thank you Derek for this!
It wasn't clarified, it was corrected. Rather than admit his errors, he just ignored them, and presented it again using the arguments of his critics, but as if all his critics misunderstood him. No, veritasium misunderstood what would happen and his previous video was just wrong. Guy, as a first year EE student, you probably already knew about capacitance and capacitors, but it is good to start thinking early about the fact that all conductors have shared capacitance between them....you have lots of capacitances in every circuit whether there are actual capacitors there or not...most of them just aren't large enough to do anything -- turn on a light, for example.
You either accept Maxwell's Equations or you don't. If you do then the important issue here is that Veritsium's presentation relies on transients and the dE/dt and dB/dt terms. In the case of DC scenario, however, the current density J is the ONLY source of the B field so whilst factually correct Veritasium's presentation is misleading. Whilst the field is present the Poynting Vector E X B is in turn due to the movement of charge INSIDE the cable. Also as a veteran PCB designer I can confirm that none of the comments apply to DC-only PCB designs unless transients are important.
Half of this video was over my head, I think the first video got it right for a general audience though it obviously didn't satisfy those with more specialist knowledge.
As a basic electrician in australia this makes perfect sense. We actually learn a little bit about it in trade school. It help us understand why certain circuits need shielding, why transformers work and why cables need to be distanced properly.
As a common clay of the earth peasant who somehow still managed get his laureate diploma in 3 years of university in informatics to im gonna say i lost the thought in first 5 minutes of this video and dint had any clue what was happening later beside the " oh i know the significant of this single word" but not the meaning of the whole phrase, yes the shepherd dogs and sheep was clear.. but nothing before or after it made sense for me
It also made a fair sum of sense as someone who's delved into networking. "Crosstalk" is a thing on ethernet cables, which explains all the shielding and wrapping.
Positive or negative, this is what true science and engineering is all about. The discourse and discussions you have with others in the fields, is, to borrow a phrase, brilliant. Great video.
Took me 2 years since this came out and about 2 months since I started tinkering with actual circuits to really understand what's going on. I knew fields had more to do with the flow of energy than electricity during my time in college by reading all the technical stuff but it's one of those things that become easy to ignore once you have built an intuition around a different model. Cool stuff, I'm glad I was finally able to come back and really understand it.
I think we as viewers can't appreciate enough how much work goes into the making of these graphical explanations. Creating these active images must take a significant time.
Yap and e reason,to tink it thru and thru and thru and only then start to tink about materials so whole apparatus preform on max,parts (depending on job, materials, friction not double check and energy is lost by over hitting or drifting all over so when you asembel it in your mind you just turned it on and you can after some time stop it, and look for how to maybe get some form to smut aut vibration, also energy lost cute to most efisent that you can do,after some time in virtual lab-brain, just copy from blue print Frome Etar ,from find out what is needed for all or to you like tool upgrade for jet easy and better preform vhail you can continue inventing , practically,greater,more this rock friendly,,,copy from the natural,, Viktor Shaunberg..3,6,9, frekfencije, wave, light and we cud be able to get Devin more, little by little if we continue inventing things that are really going to be need and justing to get some steps closer to are crietor by making all aut good for birds,plants,lend,voter,if we continue to that way I think that lot of people that are alive now,while be able to see forming on as real fizička wings i am Shure we just to have but,beacouse humanity took some rong turnns,we got little lost,but if we continue little slower and conses the wings while start to floris same as Creator Good all matey,we are going out to next generation we got to love the life,like we live the love, were heading out to aur Creator Good all we made by himself by the way of the hand of the almighty hvala,i slavimo tvorca našeg i sve božanstvene stvari iskonskom,pravom slavom života,dobra.
@@cr1197 woooow people i was born and raised in Balkan little state Serbija,and we don't just glagoljica but ćirilica so i notest that it really have big influence on witch language we think so i apologize to all serious people... about my western grama i am sorry for my bad English i not no how to tip out my thoughts
This is why I love science, if something isn't entirely correct or is poorly explained lots of people go and test it to prove it wrong and demonstrate why, so we end up with even better explanations for things :)
@@Beanskiiii agree, i may like the evolution theory, but in the end, there is so much unexplained on why we ended up on how we are, hopefully we gain more information.
Except for when no dissent is allowed on a topic and all credible discussion of that dissent is banned from all public platforms. Then it's not science, it's propaganda.
What an interesting video. As a high Voltage linemen I have experienced this field while working under transmission lines. We measured voltage on our truck of 275 volts measured truck to dirt. We could also take light bulbs and light them up while connected to nothing, just under the lines. Really cool stuff. Still a bit hard to wrap ones head around, but i think you did a great job
I tell ppl and they don't believe me LMAO under the power lines swinGinG fluorescent bulbs around like liGhtsabers 😂😂😂. I used to Go floatinG down the river every Sunday when I was 21 BC it was my only day off and what a better way to spend it than a Giant lazy river where you don't Get cell service??? It was nice way to unpluG, well anyway at the end of the float there is a section of power lines that you pass under and you know to start GettinG ready for the exit. This Guy that used to float with us was a little older than me and would swear that sometimes the old Gospel AM station around here would just be playinG in the air when you Got to the power lines and we all thouGht he was bat sh!t crazy until the Gospel station was playinG faintly one day when we floated under the lines and it blew my mind and I learned about RF induction. 🤯🤯🤯
@@skreenname229 Just to clarify... You mean that actual sound could be heard somewhere below the power lines because of RF induction in the power lines?
Great explanation! I've been researching all kinds of E&M applications for longer than I care to admit, yet I still find myself taken aback all the time when a marvelously intuitive explanation like yours comes around to disabuse my common misinterpretations. So thank you for the new perspective and clarity. I'll be sure to pay it forward and better elaborate to those I've instructed to merely calculate.
I just love all of this. I mean the bigger picture of it, the fact that we live in a time where people "fight" to find the best way of explaining things and improve our collective understanding of science. And we all watch these videos and read comments and is absolutely beautiful. I think this is the right direction for humanity, a place where all of us are curious, and we try to understand the world around us and discover maybe new things and most importantly, find ways to explain what we already know to others. Kudos to these youtubers building this kind of space.
You've also hinted at the best trick to asking for help on the Internet: never just ask the question; ask the question AND THEN answer it incorrectly. Far more people are interested in correcting others than simply helping them.
I feel like this has been a major force in the advance in science throughout history. Someone makes a claim and people can't wait to tell them that they are wrong. The modern theories are the ones that have stood up to all the arrows being fired at it.
@@madkem1 yeah honestly seems about right. Same goes for new tech. Most things seem like a bad idea at first and need to be proven. I imagine the first guy to say "forget swords, we need to be making as many metal tubes, tiny balls, and as much black powder as we can" sounded pretty dumb at the time.
Veritasium in the last year or two has really revived my hope that youtube science can be more than either crazy conspiracy videos or purely informational. He's doing the closest a pop-scientist has done to science since the mythbusters, and he's arguably added the important step of peer review into his process.
I encourage you to take a look at the youtube channel "Kurzgesagt in a Nutshell". Highly informative and entertaining educational animations about all aspects of Science and reality.
THANK YOU SO MUCH!!!!! I'm a mech eng who studied circuits in eng school and it never made sense to me!!!! I was like...well if the electrons drift so slow...what actually carries the charge? And yet they wanted me to do calculations equating the charge and the electron. It was so confusing! It never made sense! I could do the calcs...but I never had an intuitive grasp of it. The charge is in the FIELDS!!!! Now that I have the fundamental building blocks corrected...electical eng does not seem so opaque...and I may take up the study now that I get it! I guess I should have stuck with Maxwell's equations. But ME's don't get that deep. Thank you!!!
The electrons do carry charge. A charge (being a charged particle) in an electric field has a force on it. Work is done when energy is converted from one form to another (Work = Force x Distance). Heat is created when electrons are forced through a wire. The use of Maxwell's equations do not involve the Poynting vector. The Poynting vector is not required to explain the initial current on the load side of the circuit. The Poynting vector is used here to infer energy flow through space. (A charge moving through a magnetic field also has a force on it).
This kind of thing is how humanity develops. The next generations are the ones who will be pushing the world forwards. Education like this is game changing. No doubt many teachers will be incorporating this!
V: "The surface charge description is omitted from most textbooks..." Me: "Weird, I remember hearing about that in my E&M class." V: "...but there's a great treatment of it in Matter and Interactions by Chabay and Sherwood." Me: "Hey, I recognize that book!"
It honestly feels like a brand new genre of RUclips Science. Idk how many other science videos are out there like this, but many of the best math and science RUclipsrs were referenced in this epic meta-analysis of RUclips science thought. This felt bigger, like vlog peer review. Think of the potential!!! Thanks Veritasium!
This was my thought as well, I made a note to use this video as an example of how the scientific method and peer review can work. it makes you see the real potential to educate among those who for whatever reason don't want to delve too deeply into the text books, but want to go further than the standard videos and documentaries will usually go. thoroughly enjoyable!
@@Best-um3eq I could be wrong since I'm not properly educated on this, but I would say newton's equal and opposite reaction explains it well. The difference in charge potential is what initially sets off the electrical field cascade. The field acts on the charges within the battery so they drive each other continuously, equal and opposite. Until the potential charge difference is equalized, and so then the circuit charges can equalize to a stable state as well.
Seeing Maxwell’s equations in action with a circuit has fundamentally opened my eyes to the mysteries of electricity that I never quite understood in the past. This will forever change the way I understand the exciting concept of electricity. Thanks
I wanted to say this. I was taught electricity in the simple way, and the visual just shortcuts such an incredible amount of reading and trying to picture it in your head. Ever seen those DNA visualized in 3D videos? Or PBS SpaceTime? I've learned more on RUclips than I did in school! 😂
Electricity should be taught in this way. Now that we have the processing power to illustrate the effect of maxwell's equations in real time in a software, we should show it to students and teach them about it that way; its easier to learn by watching.
I never really understood electricity because all those equations seemed too abstract. I really appreciate videos like this for actually making me understand things.
I decided to become a Civil Engineer and not an Electrical Engineer mostly because I didn't understand the electric curcuit and found nobody explaining it to me. Electrons were pushing each other and somehow the fields were part of the show. Now, more than thirty years later, I saw your video, Derek, and I only can thank you very much. I wish you all the best from Germany
Your work here is an exemplar of how the scientific method should function, with robust discussion and interaction! Thank you for sharing your pursuit for truth and knowledge!
@@LucasCarter2 He has a PhD in physics brother. Even if he is not a scientist by profession, he has to have been at one point and is certainly still qualified.
it makes me so happy to see the RUclips science community coming together and working on stuff like this peacefully happily and cooperatively especially in such awful times
But... the serious questions weren't answered. Race relations, gender identity, pronouns, religion, what is a woman!? This guy is getting canceled for not having social equity in his video, there was no representation of women and the only person I caught that might have been non-caucasian was relegated to the distant background. ...I hate that the current societal landscape makes me immediately jump to these ridiculous thoughts any time I see mention of peaceful coexistence. This is satire*.
@@adamself2463 ask any religious leaders if they can take the criticism or not.. and this is not science not politics to you can just get out of here. Nobody wants you... nobody likes you... you are alone.
If you focus on science as a profession or rather even a hobby you don't even bring up unrelated cultural changes. Be careful what you watch on the internet and stick to speaking to real people in the real world. These issues hardly come up IRL.
@@adamself2463 Hey, if you don't mind could you please clarify what you said? Derek is getting cancelled for not representing women or other race people ?
This video goes so deep that the boundaries between energy transmission by cable and by radio disappear. This is very complicated for a non-expert and can hardly be explained more simply than in this video. Thank you.
A transformer using the magnetic field of the primary wire coil to induce power to the secondary coil. I believe is what he is trying to illustrate by showing that with the wires close together, a voltage is jumping across instead of traveling down the lengths of the entire wire. It is inducing a voltage to the wire with its magnetic field.
@@famousadio was thinking the same thing but Faraday's Law (which is when you refer to coils and magnetic field explanation) is to create a new voltage source. The secondary end of the transformer is just another voltage source . In this video the unintuitive thing is the way in which a load can reach its energy from an electric source. . Can someone confirm if 11:22 is wrong or not. I've never heard of a moving electric field giving you an induced (induced because it is happening across an air gap) voltage. This video says 5V induced across the resistor and 14mW of power dissipated over the 'short gap' time before the bulk of the energy gets to it over the longer cable path. We know the cable has very good electric and magnetic permitivity properties which is why the energy doesn't dissipate away as easily. However across an air gap the permitvity basically sucks and is technically where all the energy is actually dissipated in an electric motor. The air gap in this circuit is just extremely big. Motor Air gaps are a key design and affect overall strength of magnetic circuit and motor efficiency. Only Faraday's Law is what I accept at giving you induced voltage to a new circuit across a gap but only from a moving magnetic field.
I bet there would be simpler explanations if people weren't coddled with plain wrong explanations that refuse to make sense at higher levels of understanding. The objective should be to give a lesser understanding, not a hobbled understanding.
Happy that you finally did the follow-up video. It's excellent and well thought out and adds some excellent new detail. It won't stop the nerds arguing though, the EEVblog forum thread on the video is up to 75 PAGES of debate, LOL. The argument comes down to the fact that most practical engineers do not need to think in these terms, especially at DC. But I think you can sleep well at night after this one. The only thing I didn't see mentioned was the Quantum Electrodynamics (QED) hypothesis that might ultimately trump Poynting and Maxwell when it comes to energy flow inside vs outside the wire. But I can understand how that might side track this video completely. I know the Poynting/Maxwell math still works out for DC, but it's just The Vibe. So it's inside the wire at DC for this crusty electronics engineer :-P Well done.
@@tpog1 I was thinking of finding the world expert on QED and having a chat, anyone know who that is? I think that if you can do a physical experiment to prove QED and energy flow inside a wire, you'd win a Nobel prize. and change physics forever. And that's the problem with discussing it, AFAIK there is no practical experiment confirming it. I tried to read some researc papers on it, but my head exploded.
do you think we know everything there is to know about electricity yet ? also, whatever we do know, do you think that is completely correct? would love an answer to these questions. (sorry im a noob when it comes to this)
@@EpicBunty Do we know everything? - Probably not. QED sound promising, and if true it likely trumps Maxwell/Poynting theory. In the same way that Einsteins general theory of relatively up-ended Newtons. What we already know - Maxwell/Poynting is correct, because it provides a method to explain things that verifies with actual measurements. But we also still use Newtons laws to do lots of practical stuff, there is just a higher level theory available. We can't be 100% sure that a higher level theory above Maxwell/Poynting does not exist. And even if there is, for almost everything we'd still use Maxwell/Poynting anyway. And as Derek explained, we still use Ohms law and lumped transmission line theory, and transformer theory, and antenna theory to do practical stuff, because we don't need to fuss over the details or exactly how the energy flows.
I'm an ex-electrician and an electronics enthusiast from way back, and I've never heard such a thorough explanation of how electricity works from any of my text books and lecturers. Thanks. I learnt a lot.
As an Electrical Engineer that studied PCB design, like Rick Hartley, we were all too aware of field effect induction and transmission in arrayed semiconductor components. This video takes it from the nano world to the macro world and demands that all electronics be taught from Maxwell's understanding and not Ohm first.
We don't learn it in Physics studies either, and yet it is described in Feynman chapter 27 of book 2 ("Field Energy and Field Momentum", you can read it online). While even Feynman calls it "nuts", he agrees Derek's understanding is what the equations say and is the correct understanding. The fact that simulations that solve the Maxwell's equations show exactly that's what's happening should be sufficient to convince us that it's correct, as noone doubts Maxwell's equations, which have never failed and are correct under relativistic assumptions (in fact the B field is a consequence of relativistic movement of the electrons).
@@andrewwashere9151 absolutely, That's why I cannot understand the electricity because it is not clear with funadamentals, even I ask the lecturer, their answers doesn't satisfy
as a comp eng. major I remember spending hours trying to get intuition about how electrons are moving through a circuit with a battery. I remember googling around looking at forums, but never really getting a good explanation. This actually clears up so much. I wish they would go more in depth in basic physics textbooks so people like me don't have to waste so much time trying to get intuition.
When I was training as a communication technician, we were constantly expected to accept something and move on. My mind (and I suspect many of my co-workers) finds it difficult to work that way. I need to understand something fundamentally or I'm just confused. Needless to say, I wasn't a very good technician. 😂
Thankfully I had a really good professor in my introductory University Electrical Physics class and really cleared up many of the misconceptions for me. A good teacher will make all of the difference
@@aarondavis8943 Far too much of our educational and training systems operate that way, and it's terrible for the development of actual understanding (and thus in-depth troubleshooting). They default to shortcuts that feel too much like hand-wavy, religious faith "just trust me" arguments.
@@schroecat1 I've founf that what is happening is... those shortcuts... are from trying to condense 2 weeks of info into 2 minutes, it gets SO SHORT it becomes incorrect.
I wanted to say that as a viewer I really appreciate how you went about making this revisit. It can often be too easy to defend one's position in a way that is basically just lashing out. Instead this was well put together and explanative
The video is well put together and exploitative but its a horrible defense of the previous video. People were not calling out the previous video because they disagreed with the physics they were calling it out because it was purposefully designed to confuse people. And this video really does not address that complaint. It addresses many of the specific aspects people found misleading but not by apologizing but by doubling down on considering them non issues.
I mean he wasn't the first RUclipsr to do this experiment. AFAIK AlphaPhoenix was in response to Veritasium's video. Edit: Ah, Derek acknowledges him later in the video, my bad.
Me: trying to grossly overly simplify everything so anyone can understand. Veritasium: ha! I'm going to melt everyone's mind and make them question reality, hold my beer.
Thanks for the video Derek. This video brought a greater understanding to me of how electricity works. Now I want to challenge you to either prove or disprove that high-end audio cables make a difference in sound.
Congrats mate for perfectly embodying the scientific method. Thanks for not having an academic tantrum & making another video to clarify your position. This is how science moves forward. Cheers
@@EvanPilb He just did. That's what this video is. He was wrong and yet insists that he was correct because he claims to have actually meant something other than what he originally said. Why he couldn't just admit that his previous video was incorrect and then reshape his argument I'll never know.
This follow-up video is one of the best examples I've seen of some of the foundations of science: - The peer-review principle - Test the theory against experiments and calculations - Adjust/clarify the conclutions Well done!
Not only that, but actually being excited about people trying to disprove your theory is the mark of a real scientist. Science advances just as much, if not more, when a theory is proved incorrect. "No amount of experimentation can ever prove me right, a single experiment can prove me wrong." -Albert Einstein
He still screwed up. He needs to arrange the wire to eliminate induction. In which case the initial induction can be reduced to as close to zero as you want. Just arrange the wires in giant circles so the are no two battery/light wires running parallel. Only battrry/battety or light/light wires in paralllel. Then no induction can happen. Of course the forces are transmitted by fields (electons and protons do not touch each other). Both protons and electrons themselves are waves. Plus the induction can only happen for a short time period as there is a change in net velocity of the electrons from "net still" to a whatever speed they travel. Once they achieve an equilobrum in speed the NO induction will occur between any of wires. He still doesn't understand the standard model and this is just a much of a fail as the last video. I could spend all day on his errors. For example the field merely changing around the wire in the air is not transmitting energy/power at all. Why? Because there is nothing for it to act on. This video is still a comedy of errors. I am also disappointed these trained scientists aren't calling him on it. Although I am not surprised. I used to sit through various math and science classes where other students and even the teacher would have a kind of rote memorized understanding but no good model in their head. Electrons move around the vicinity of atoms all the time generating net collectively changing fields and also not transmitting any power. DUH!!! Only under special circumstances will power be transmitted to things in the fields when they change. Same with electrons flowing through the wires in might house. I am sitting in those fields right now and I am not "lighting up".
@@brianmacker1288 Since you're clear on the errors here and understand the true mechanism of electric power transmission, would you be able to explain it to me? I'm afraid I am no physicist and don't have your level of insight.
@@kingbolo4579The subject is too complex to explain in any great detail in a comment section. Charged particles can act at a distance which is why electrons traveling in one wire can induce the flow of electrons in another. They generate electric and magnetic fields which are NOT confined to any wire. Fields that can store and transmit energy. Electrons can also emit and absorb radiation under certain circumstances. There is a dispute here over two different perspectives of the same phenomena. It is incorrect to claim that the electrons flowing in a wire cannot carry any energy. It is also incorrect to view the surface electrons on a wire as sitting static and as separate from the sea of valence electrons that are in constant random motion in any metal. All the electrons of a metal are equal in their membership in that sea of electrons, even when there is an excess, and are free to move in any direction with the metal. The matrix of positive atoms actually is interior to this sea of electrons. So every single electron in the sea is inside the metal at all times. Surface electrons are NOT outside the metal. Electrons have mass and as they move in an electric field the gain velocity and thus momentum. Thus electrons can carry energy inside a wire as they flow with an electric field gaining momentum. It is however a very chaotic process with electrons "bouncing" about repelled by each other like atoms in a gas. They can transfer some of this momentum to atoms in the wire, resistor, or light filiment by losing velocity during a bounce, which will heat up the wire or light filiment or resistor. There are other perspectives to think about this however it is perfectly valid to say that "energy flows in wires" because it can. When you lift an apple off the ground we claim it is storing potential energy. Later when dropped that potential energy is release. It is perfectly valid to model from the apples perspective and not from the perspective of the Earth or the gravitational field. When you lift the apple the Earth is also deflected downward a miniscule amount. When you drop the apple the Earth deflects slightly towards the apple. This can be ignored because of the relative enofmity of the Earth. One could generate a Poyning vector representation of this which would show the energy being stored in the gravity field. It is just a different perspective on the same thing. There will be situations where the apple prespective is a poor model. That doesn't mean other perspectives are not correct. A dropped apple is either falling or orbiting the earth depending on perspective. Same with a weather satellite. In reality both fslling and orbiting are working by the same mechanism gravity fields. To say "energy does not flow in wires" is as wrong as claiming "apples do not fall". Energy does flow in wires but can also be thought of as flowing in the fields too, or even being stored in fields. One does not exclude the other.
@@kingbolo4579 First comment of a series of comments. When a switch is flipped and electrons begin to flow in a live wire they cause an electro magnetic field which can push on or deflect other electrons in the same wire or other pieces of metal. Thus when arranged certain ways can cause a current to flow in a different section of the same wire or another wire "by induction". Two wires running parallel to each other are prone the this effect. This is because the currents expanding magnetic field causes the other wire to act as is it were in motion relative to a stationary field. Using the "right hand rule" we can see that a current is induced in a parallel wire in the opposite direction. The closer the wires the greater this induction effect. The parallel wire draw energy from the field to generate the current. Which is actually accomplished by an slowing of the electons in the live wire. This effect stops once the current stablizes at maximum flow, and the magneti field has finished expanding locally. The other wire now experiences a static magnetic field, and does not sct as if moving through a magnetic field. No more current will be induced in the parallel wire. Resistance in that wire will dissipate the induced current. Eventually no current will be flowing. If the current is turned off in the live wire the magnetic field collapses. When the switch is turned off the opposite occurs. The electrons slow in the off live wire. The magnetic field lines collapse inward. The parallel wire now acts as if moving through a magnetic field but in the opposite direction. A current is for a short period induced in the opposite direction from before. Veritasium and Electroboom both missed this fact. In both cases the induced current will normally be much smaller than the live current. Not enough to light a bulb which would normally be connected to the live wire. In his setup you could rapidly turn the switch on, then off. In 1/c seconds an induced current would flow one way. Suppose you waited say 1000/c and switched it off (the electrons having only flowed 1000 meters down the wire at best). In around 1/c seconds after switching it off the light bulb would experience a second induced current in the opposite direction. The current would briefly stop, then reverse. So if he is counting that miniscule current as "the light turning on". Then turning the switch on would "turn on" the light. Flipping the switch off would briefly turn off the light, but for a moment it would turn back on and off as the magnetic field collasped fully. It is actually much more complicated as there would be a current pulse spreading down the wire with diminising power ( unlike if the switch remained on).
I love internet science. Like this is the exact thing that happened with scientists hundreds of years ago, just much slower because of communication technology. A bunch of people who make a claim, people dispute it, they run the experiment. Its just brilliant.
@@Th3EpitapH Yes thats true. But most new stuff is way out of scope for the average person (for now). And to be fair I feel like most people didn't know much of this information. Im in a college physics class right now and they didn't really touch on the idea of the fields move the energy not the electrons
@@anacreon212 yeah but those were actually educated people...the internet comprises the masses of mediocre knowledge. Letters of scientists in the 1800s were by experts who pushed the field forward. This forum is for people who didn't know how electricity works 30 minutes ago :-\
Ok I don't know much but form my perspective, In a simple circuit, when a battery is connected, it provides potential difference and creates an electric field that propagates almost instantaneously through the wires have speed equal to speed light C, driving electrons to move and create a current. And we have question: does elctron really move? Answer is Yes they do , but here is catch, electrons do move slowly (drift velocity) in fact very slowly, and the actual energy transfer occurs through the electromagnetic field established by the electric and magnetic forces around the wire. And you ask how EM field move and tranfer energy? Answer is poyntig vector, The Poynting vector describes how this energy flows outside the conductor, not by the physical movement of electrons. About bulb . Inside the bulb’s filament, electrical energy is converted into heat through Joule heating, causing the filament to glow via incandescence. While electrons play a role, it is the electric field and electromagnetic energy transfer that power the circuit and light the bulb. I think 🤔 this may help to understand all. for more details For enthusiastic science people, i want to include quantum mechanics, elctron are not actual particle, but they create elctron cloud around nuclear in their perticular energy levels, we may also called them 'Fermi gas '. they obey Fermi dirac statistic for charge distribution. And The quantum nature of electrons means that their exact positions and velocities are governed by probabilities. However, the collective behavior of many electrons leads to the observable flow of current.
People really need to remember that most engineering-centric views of the world are, at their core, useful simplifications. Just like how an electrical engineer doesn't need to think about quarks when discussing how semiconductors work (since it is more or less "irrelevant"), an electrical engineer also doesn't need to "fully" consider how energy is actually dissipated to a load, but instead must simply understand and be able to model (with a sufficient degree of accuracy) what is happening. As a computer engineer, I also like to think of this as an abstraction, similar to how someone writing software really doesn't need to understand "exactly" what the CPU is doing in order to sufficiently write a piece of software (unless you are obviously writing low-level code which interacts with assembly or something).
This applies to most discussion in general. It turns out that a lot of things are more nuanced than they appear on the surface, and many disagreements stem simply from having a slightly different conception of something, or the definitions of things being discussed. Whenever I find myself in a conversation with someone who is reactionary or jumps to conclusions based on a few words they just heard, I'm reminded of this.
I feel like that's the thing he didn't address at all here! He went as "corrected" misunderstandings (that shouldn't have been) but his narrative stays: "school lies to you"... by proxy people will take it as science/engineering lies to you. However this is not what it's all about. As you say, its a model to describe something! But him saying it's a lie creates more distrust than necessary...
Derek has elevated his RUclips game from breaking down complex concepts into simple videos that the general masses can enjoy to complexifying "simple" concepts taught in high school and entry level physics college courses to upper class/masters/PhD levels to entertain the general masses.
Derek finally proved that I wasn't hallucinating through my electrical engineering classes. These concepts makes no sense in the normal sense even after 2 years of learning this, and he nails explaining them.
@@Newend03 I agree. Before I watched the last video I had worked out everything(intuitively and with material over a period of 3 years). Except I didn't make the connection that the energy is in the fields. That revelation blew my mind. But it also makes sense because I had never understood poynting theorem before. And hence never thought that it would have active use in the real world.
Simple videos? His videos are complicated on purpose for the wow factor and the show. His apologies for leaving out the units were not sincere. He is too smart to have left out that detail
This saga has been one of the most interesting and wholesome things I've ever seen on youtube. Your first video led me to [re]discovering electroboom, alpha phoenix, and a few more awesome science channels. Watching everyone's different critiques and explanations was a kind of deep dive I didn't know I needed. Thanks, Derek.
Honestly. Thank this guy for highlighting this. Last year when I was getting into Electronics. I was convinced that there was something awkward about the explanations of how electricity actually worked in relation to the circuits.
11:08 "And at that instant, the electric field inside the conductor is no longer zero..." Thank you! I felt like I was only person saying this out loud.
*What is the Gospel?* The true gospel is the good news that God saves sinners. Man is by nature sinful and separated from God with no hope of remedying that situation. But God, by His power, provided the means of man’s redemption in the death, burial, and resurrection of the Savior, Jesus Christ. Ephesians 2:8-9 For it is by grace you have been saved through faith. And this is not your own doing; it is the gift of GOD, not a result of works, so that no one may boast. Romans 10:9 9 because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. JESUS CHRIST can come anytime! REPENT OF YOUR SINS Just Believe ❤️ Love you and GOD BLESS
Glad to see the age-old tradition of scientists/engineers ripping into a colleague's experiment and eventually ending on "huh you were right, that's pretty cool" is alive and well
@@barrypenobscott9882 medicine follows the science, but the science is limited by capitalism, regulatory institutions, & universities all run by the same people. To fix this we need to a) fully & publicly fund medical & pharmaceutical research at independent labs, and b) permanently divorce government regulatory institutions from the private pharmaceutical industry (and all private industry for that matter). As for the vaccines they did the best they could within the framework we have (and I'm happy with mine because I spent a weekend with and shared a meal and spoon with someone who had contracted Delta and I didn't get it). We MUST change the framework.
This back and forth between all these people has been pure awesomeness!! Most of them are squeezing their brains to show as clear as possible some very interesting stuff about electronics, and almost none of them are being deliberately deceptive nor misleading in their arguments. It's great to see that we can engage between people this way!
I'm an electronic engineer. Due to your idea of proving something, lots of point of views came out, and I could say we are all amazed by the way nature really works. Lots of credit & respect to your channel!!
So would you say that if I took a standard light socket, and got a little led close enough to it, that it would turn on? The Earth has a giant magnetic field, why don’t we just have free electricity from that?
I'm not an engineer or an electrician, but I remember years ago seeing fluorescent tubes being lit up just being near high voltage lines and my mind was blown and I realised back then that electricity and energy transmission was not what I thought it was. As a non expert but interested person I say bravo! 👏
Yep. Everyone who's seen this happen would have got it by the first video. Energy is transmitted through the field, wires are just really effective in setting it up. Doesn't mean you can't get electricity outside of material wire connection.
I am an engineer and an electrician, so I know It is a nonsense con artist Video. . . . Sorry, but that is what it is.. . . At DC, all the power pushed by the Battery Voltage, moving Electrons INSIDE the copper wire to light the bulb. . . Nothing to do with any fields outside the wire, that is just a con.
@@vinamraparashar7590 I recently gave up on using a 555 timer for something I want to do in my car (a toggle switch for remote engine start). That thing keeps turning off from the spark plug discharges. Completely shielding and grounding the shield didn't help either. It was one of those weirdness cases when I just don't feel like I want to keep going with it, because it's clearly way more complicated than I wanted it to be.
Hi, . I am an engineer and an electrician, and I work in DC and AC and Radio and I do know the scientific principles. . . At DC the Current does flow INSIDE the wire and nothing to do with any external fields, Veritasium has that very wrong.. . i do know the science.
@@scooterelway9191 The main message is a 100% quality content though. People are awful compared to autonomous cars and kill a lot more people than those cars wouldn.
@@johnhill160 Yeah I could imagine if more than half of the cars were autonomous then practically all the accidents would be caused by real drivers jacking up the system. Cars with interconnected 5G could react so much faster than a human could
@@johnhill160 no, the autonomous car video was an ad, it wasnt a normal video, it was propaganda at best, otherwise i love this channel but you can't just brush off valid criticism.
I really like the point that we sometimes take simplified models (such as Ohm's law) for granted and forget that they are just useful simplifications, just like Newton's law of gravity. I also greatly respect this and the preceding video for not just highlighting this in the electric circuits but helping develop a deeper understanding (with great visuals) of what is happening in circuits. Despite being complex, if we do not take for granted our simplified models and aim to appreciate the underlying mechanics we will develop a better intuition for how electricity works at macroscopic levels. This results in us being more successful in solving and designing problems related to electric circuits. Thanks Derek.
I love that the explainer for this is three times longer than the original video. But it seems that you've taken the lesson to heart and go into a lot more detail in your videos now
I love it when the science YT community disagrees. All participants try to come up with well-founded arguments and each can help progress understanding in a different way because they all have their own approach. Even if they are wrong, which inevitable some of them are, the error helps comprehension.
@@koalabandit9166 You know who else wants the freedom to understamd things. Litterally everyone. Its a human feeling. Saying its problematic is like saying hunger is problimatic. You know who else likes to eat food. Hitler. Very problimatic.
I want you to know I’m in my mid 30’s and I had a science teacher in 6th grade tell us how the electrons actually didn’t travel along the wires because it would take this immense amount of time and Try to explain it a little bit just as an aside and I’ve held that memory about electrons not traveling the wires but had no idea how it actually worked all the way until now. This was incredibly edifying and I’m so glad channels and people like you guys exist to help others understand cool scientific concepts that i would otherwise never encounter in my life. 👍👍
I'm not so sure the explanations are truly so different but it's definitely a way better visual teaching. The same 'caveat' seems to exist where this more than negligible current is lighting the load in a closed circuit solely based on how fast the electric field radiated from the power source reaches the load conductor, but the actual current flow and applied voltage is not seen by the load until after the light speed delay more or less. I don't think he can say the field is whats providing the current because the electron flow is still doing that. The EMF is made by the electric and magnetic fields but the electric current is charge carriers moving in the conductor. For example, the battery itself is not putting out an electric field which has some strength where you can simply place it near the bulb and get it to draw that negligible power. The closed magnetic and electric circuit is what creates these fields that move the charge carriers in the flow. If you introduce a moving external magnetic or electric field to light the bulb you are still directing the electric current in the conductor. The 'field is supplying the energy' in that case because the source is external but it's all magnetic or electric closed loops in a circuit one way or another. The critiques of some engineers seem to be details such as comparing wireless transfer with some form of conveyance of energy that doesn't involve the closed circuit conductors. Basically it seems like he is trying to make a valid point here but it seems based around the concept of saying something is happening at a faster than light speed interaction when that is not the case. We are using a light speed interaction to account for things like particles and fields when they move or propagate along a distance of conductor. If he is using a Faraday complaint simulation then he is showing what is basically induction and this field propagation which is simply not having to moving along a conductive waveguide that takes it on a detour. I want to know what happens in this experiment or simulation when this propagating field from the source is not reaching the load fast enough.
They are explained as not traveling "all the way down' the wires to be exact, sometimes, to illustrate that it's the electrons present in the conductor which are first seeing the load. This is sort of self illustrated with the slow drift speed and understanding that your common bedroom light will see voltage after you turn the switch on at approx light speed, so it can't be some electron slowly moving from the source all the way to the load in order for that to happen.
It's so heartening to see everyone work on the same problem and arrive at the same conclusion through all these different ways. Makes me hopeful for the future!
Going into more depth really helps! It's interesting how everything is linked, em fields, current, emf, frequency, transmission lines, capacitive, inductive and mutual coupling, Fourier analysis...
This is what science is about: getting the word out there and...collaborate! Great job Derek, and great job to everyone who gave even a small contribution! You guys are awesome!!
I remember in highschool, My teacher said that the diagram of flowing electons is just for illustration, and makes things easier to work with in a practical sense and but don't actually carry the energy. and it is physically not how it works. I have never forgotten that. So these interactions are much less surprising to me. But I love the actual breakdowns. I also love that you revisit, and are also not afraid to admit you're wrong when you are. great stuff
I second this, my late physics teacher gave us the same lecture in our early school days. "This is just an illustration to help you think about how it works in simpler way, but the actual model is more complex and not necessary to bring up as we can accomplish the same end results with the simpler explanations." So glad to see that how great minds think in similar way.
Fields is why conducting electricity in the nano-scale makes it a headache. EMF noise, crosstalk and even quantum fluctuations make it a challenge to keep the Moore's Law. I didn't fully understand how the fields and the Maxwell equations worked until you explained this very intrinsic matter everyone assumed was simpler. Thank you and keep the awesome work!
Now we need a video explaining what a field is! How can the field carry the energy? Even in empty space? What is carrying the energy? Because a "field" is just a mathematical representation... The field itself doesn't exist, so maybe that could be an even more impressive video by Derek!
@@viligante8 its wave like light spectrum but in electro magnetic, the stronger the electromagnetic wave the more it carry energy, thats why they use coil in wireless charging to multiply that effect, cmiiw
Came across as a top notch, both as a presenter and as a good & well meaning human being. Has show both humility & willingness to re-present without any ego. Which make one real top notch. Kudos.
Please do more of this kind of thing. This one, the back and forth on the down wind faster that the wind saga, ElectroBoom and Steve Mould's 'spat' over the Mould effect... all of those are like the greatest things I've seen on RUclips
Adding the capacitors in just made everything click for me! Great job in explaining everything and bridging the gap between E&M physics/Maxwell's equations and standard EE circuit models!!
I almost convinced by this video but ...... model the circuit in HFSS transient simulation should reveal similar result. It is just EM wave propagation together with circuit.
This is why I love physics. Often we give a simple explanation to phenomena happening around us. But the actual correct explanation is quite complex and quite intriguing.
@@stuartsloan Well, Darwinian evolution (as the name suggests) only explains how populations of living things change over time. You can only rewind it up to the first living organism and no further. This is because its "pre-life" ancestors violate the base assumptions that evolution is based on. It's a phase transition. Something similar happens when you cool a gas. We have theories that describe how gas behaves when you cool it down, but they break when you reach the boiling point and the gas starts transitioning to a liquid (which does not obey laws of gasses).
Going on this journey and seeing the response videos in a “real time” debate or conversation is exactly what I the internet SHOULD be! Thanks to everyone who made that happen! From the educators to the audience that bumped those videos up the algorithm. It was exciting to see and I learned something along the way.
to be honest. .. I am so lost with this topic. But yeah the way we were able to see the real time debate felt so ... pure. just how the internet should be. its amazing !!
I love the fact the first video stimulated such a conversation with many other YT creators I follow, ie Dave and BigClive , I congratulate Veritasium for tackling and then reviewing the evidence he presents, this is that Science is, is it not?
agree, it's precisely what science is about...the scientific method at its best...experiment, verify, adjust, etc, etc...that's how we learn. So glad other people took the time to question and experiment themselves. Hopefully some new discoveries come along the way too
The inspiring moment is when people are trying to "debunk" you, you're pretty happy, because you see people are engaged with this problem. I think this is one of the core values all teachers must have. A teacher does need to be right, but the priority should always be on engagement rather than correctness.
Hence we have too many religious zelots, all thinking they are right, because their teachers followed your instructions of engaging people rather than be correct. I rather have my teachers, either be correct or teach me critical thinking about their teachings. Engagement is only a bonus to make it more fun/interesting/memorable, the content is way more important.
@@rb3872 I guess what I was trying to say is that, at least while trying to teach physics, you'll get most of the answers written somewhere in some book. So the importance should be given in how to connect with the facts rather than parroting information. I used engagement in the sense that you think about the facts from your own perspective. And I would go so far to say that the teachers should sometimes make mistakes intentionally so that the student tries to correct him! Because, to do that the student needs to really understand the material!!
I don't know, I was mostly just confused by the first video. I know a decent amount about electricity. But I still didn't really understand what he was talking about when I watched the first one. I watched electrobooms video response to it and it finally made sense what he was talking about. I don't know, maybe I wasn't paying enough attention the first time watching it but if you read the comments on the video there are many people who are confused by it. I will say the way he explained how the electricity actually travels down the wire was interesting. But the original question he asks I didn't like for the same reason electroboom explains which is that it's technically correct but in the real world it just doesn't apply because the amount of "electricity" reaching the bulb is super miniscule. I think he does do a better job of explaining it in this video.
This is how science works. Someone gives a theory others challenge that theory and finally we get a finished product which is nearer to the truth than before. There is no place for ego in science. I loved how this whole current through circuit dilemma is making us more knowledgeable as a whole. Thanks a lot Derek and specially everyone else who asked questions about Derek's original video. Science for the win!!
That’s what’s so great about the scientific method. Questions from other peers are sooo valuable! Good for Veritasium for both videos and the entire community for taking on the challenge :)
This has nothing to do with scientific method. There were some gaps in the explanation and the scientific and engineering literature already has some pretty confusing terminology which created confusion. All of the noise only happened because it's Veritasium. If any other lesser known channels would have made similar mistakes, nobody would've cared. So it's ultimately about popularity on internet.
@@randomuser5237 That's pretty accurate for the scientific method as well, if you're a big name a journal is going to be more likely to actually send your paper for review instead of just outright rejecting it. But also part of the review process is in how you explain your findings, not just in how you design your experiments or interpret those findings.
This is what’s great about pure science- experts coming together and debate, call each other out and debate more and then eventually someone may take a question away and refine our knowledge or model and better educate the rest of us.
I really when RUclipsrs of Science contest each others opinions. Each one explains their side in a very detailed and intelligent manner. There's no drama, just information of proving/disproving one's statement. Please continue making these "colabs". It allows me to keep an open mind and learn in the process.
This is what is called civil discourse I think. Two parties discuss their claims appropriately, and professionally. That civility is uncommon as hell glad to see it for the first time publicly. Feels like my whole life people have been bickering & yelling at each other. Online, Politics, etc. We also get smarter through all this discussion as well!
Electricity never made sense to me, and it always bugged me that I can't make it click in my mind (fumbling about with equations is easy enough in physics classes, but that is no understanding). These illustrations and explanations are absolutely brilliant, thank you!
@@pluto8404 That depends on which interpretation of QM one adheres to. Some state there is no strict duality, like pilot wave. Copenhagen doesn't say it's real (or at least the wavefunction itself).
I loved seeing the detailed and animated simulations. That's not something your average person can put together, so thank you for making this great video!
Chill out, what ya yellin' for? Lay back, it's all been done before. And if you could only let it be, you will see that I am the funniest YouT*ber of all time. Admit it, my dear follow*r 3m
Normal person question: Doesn't this mean all lightbulbs in the close vicinity would get turned on regardless of being connected to the wire? That would have been a great demonstration: surround the switch with non-connected bulbs and show how they light up for a split second until the fields realign around the wires. Maybe collab with one of the youtubers that make those "1 million FPS" videos :)
If you use AC rather than DC, so that the electric field is always changing, then the effect on the non-connected load is continuous rather than transient. If you do a RUclips search for fluorescent tube light under power lines you will see plenty of examples of this phenomenon.
@@robinpayne125 you'd also have to be very careful about what light you use. You couldn't really use a household light, but you could devise a device like a joule thief to amplify that for a small LED. This goes without saying but you can't power something like an incandescent bulb or even a household LED via stray capacitance alone.
I love how thorough you are with you're explanations, giving multiple examples to ensure comprehension. Because of that I've able been to learn and understand things that were never fully explained or at least articulated in a fashion for me to fully comprehend it while in school settings. While I did learn a lot of the basic fundamentals of electrical engineering for diagnosis in the automotive industry it never went quite this far in depth but my curiosity was always there and I appreciate the time/effort you go to for us to learn this stuff!
As yet another EE (who didn't do as well in my electromagnetic fields courses as I would have liked...), I am very pleased to see this entire effort, from the initial video, to all the response videos, to this follow-up video. Fantastic work by all involved! Bravo!
Same I think this also helps understand why ground planes are needed in semiconductors, why high frequency circuits and very difficult, and why there is still some black magic needed to get many circuits to behave how you expect.
So fortunate! I was just thinking I wish I had the field model vs pushing-electron model sorted when I was taking those classes. For example, when trying to make sense of induction, just understanding that the field theory underpins both phenomena would have made this concept so much less unsettling.
Derek is like Russia right now, he fought all those "internet scientist NATO" alone, where they keep telling him and also the entire internet world that Derek is wrong, but Derek persists that they don't understand what he's trying to do
Science RUclips is pretty awesome, seeing all these RUclipsrs coming together around a certain theory, concept, etc, and producing so much awesome content for us, and pushing each other to be bigger and better.
Respect for admiting to some mistakes. It's refreshing to see someone both rationally defend their side and also admit to some mistakes and fix said mistakes.
All this drama because he forgot the unit.. like all math teachers always say 3 WHAT? 🍎? 🫁? 🌞?
Agreed, but can we also acknowledge how sad it is that this is the case? That the current social climate people are so ready to go down on their sword even in the face of opposing information. It’s ok to get things wrong, it is not ok to pretend you’re correct just to save face with the embarrassment of speaking on topics you have no education.
Are you referring to people like Fauci who just lie and then lie and then lie and then lie?
@@realityvanguard2052 this has nothing to do with this dicussion. try to stay on topic or don't post.
"The fascinating thing is not that electricity travels down the wires. It is, rather, that were they not insulated it would not" Nikola Tesla
This was a greatly detailed video and I think we are pretty much on the same page! Thanks for the shoutout and going through the trouble of clarification.
P.S. by the way, the resistor in your experiment didn't quite match the lien impedance, other you would get half your supply voltage right away. But I mean with such small capacitance and inductances, the probing itself could d have added some parasitic components to the lines.
PPS: Like I said above "pretty much on the same page"! It is a complex subject, and I think some nuances could have been addressed better. Maybe Derek and I could sit together and react to nuances to clarify things!
Fantastic man
Boom
Er
Maybe stop electrocuting yourself long enough to hear the man out.
Kudos to veritasium
As an electron working in the field, I'm glad we're finally getting the recognition we deserve.
Under rated joke 😭
you are a slow worker
stop being so negative!
I got a charge out of that one!
@@wual.After my latest acid experience.... 😬 We ARE electrons
Your original video has essentially achieved its purpose, you have generated a huge response, and then brought everyone together and the net outcome was to educate people in a deeper way than the average RUclips experience. Always appreciate your work man!
That obviously wasn't it's purpose
You still use the word "lightbulb" and "lights up" . Lightbulb passes the idea of incandescent bulb and "lights up" passes the idea of visible glow, so even after understanding what you explain, its still a clickbaity video and wrong.
Fantastic revisit! The animations and the simulations were spot-on, and great at showing the difference between the transient “first-second” effect, and the steady-state “rest of time” behavior. The whole “expanding loop of current” thing is a great way to phrase it, because after that poynting loop expands to match the actual physical loop of wire, then stuff starts to behave normally and all of the power is transmitted around the loop very close to the wire.
I still hold that for this simple circuit, turning on a lightbulb with wires much smaller around than they are long, the effect of surface charge vs internal charge is negligible, so you can ignore any skin-effect stuff and say that “mobile” electrons are indeed pushing on other “mobile” electrons using their fields, but I totally agree that that’s a simplification, just a simplification that makes the intuition a lot easier.
I also need to do some math about how far the average “electron” is displaced in order to build the initial charge distribution around some typical circuit elements - axial flow is the only way I understand those charge distributions getting built, and this whole endeavor has made me think hard about what that means. Someday when I think I understand it better I’ll edit up my pt.2 response video - thanks for the shoutout! I’ve got a great experiment in the works to show the “expanding poynting loop” 😁
AlphaPhoenix I just discovered your channel a few weeks ago. Killer content!
@@Alexander_D_Shaffer me too. He is an amazing scientist!
Great to see you mentioned in this video you deserve a lot more recognition for your awesome videos, they need to be viewed by many more people, they're all great! Thanks for taking the time to create them!
Shoutout well deserved. You got great content on your channel, not just the one response video.
You got lot of free time to set up that experiment.
This was a good revisit. After watching the original I didn’t feel like it made enough sense. It wasn’t until Alpha Phoenix posted his experiment that I understood the point you were actually aiming for.
Same. Glad 2nd video finally came
Yes, I strongly disliked the way the first video showed the topic although I understood, what he was trying to say - mainly because I had watched the earlier video from Scienceasylum (some 2 years before veritassium). The Video of Alpha Phoenix was great and he as much too few followers for the quality content he makes. I hope this video sends much love (and subs) to AlphaPhoenix
@@Schwuuuuup AlphaPhoenix is highly under appreciated indeed
@@Schwuuuuup You just sent one more sub to him ;)
@@godgige Oh nice! have fun there!
Very good video. Remember there is a difference between what’s true, and what matters. Derek does a great job showing the whole truth of how circuits really work. The other videos that critique it do a great job at showing what matters. For most situations the small increase in voltage at 1/c seconds is negligible compared to the overall voltage needed to light the light bulb.
OMG I love your videos
Yes
Love Ur videos
indeed
a very enchanting thought experiment and enlightening conclusions
I wonder how this would carry on to the quantum scales as well
maybe we will find a great connection there as well
Thank you
When describing circuits, most educators focus on what is happening at the subatomic level (which I love) but not the reasons why particles behave the way they do. I'm often left feeling like I missed something important in Science class - but something so rudimentary that no one will ever think to revisit it. You did an excellent job of anticipating many of my own questions (9:35). You also have the best motion graphics and editing I've seen for demonstrating this kind of information. I cannot thank you enough for this video!
What’s funny is electrons don’t move like bumper cars. In fact one could claim you can’t see them at all
This… this is what science is all about. Thought experiment, theory, peer review, experiment. Well done everyone.
When do the politicians start scolding us about what to believe? (JKing)
No...we just need one opinion. CDC says it's safe - it's safe, no more discussion needed. Trust the science.
can now someone explain workings of battery if charges dont move ???
@@JamesBond-be4cw inside the CDC you will have everything the comment stated, that's just how science works my friend
@@معراج-ل4ب When does CDC/FDA ask for peer reviews from other scientists that are not funded by big pharma?
I love the "peer review" reactions and the dialog. This is what we need. Everywhere, in science, politics etc. This is what the most powerful neurologic network looks like. Cheers ! Let's keep arguing ! Peacefully and intelligently if we can !
This is how politics / governance / law should be treated by all of us!
HEAR HEAR!
@@geospatial-KML Em radiation / radio waves are electric field perturbations. Photons _are_ electromagnetism, and with wavelengths this big over distances this small, they don't behave like particles, just fluctuating electric and magnetic fields. (That's why we call them radio waves, not radio photons, even though mathematically and physically they are the same.)
These people are very intelligent and thoughtful. This isn't "complete foolishness" at all, especially not compared to the nonsense you hear from politicians and activists.
Electricity is just inherently complex. Every analogy and description outside of pure mathematics runs into problems eventually.
There hasn't really been any arguing going on around this topic.
@@jonmichaelgalindo I'd disagree. Politics and governance are about priorities and values, not maximizing or truth or efficiency. Else we'd burn all fossil or kill infirm people or do whatever maximally efficient yet evil act is possible. We're also dealing with people, who have no fixed truth like electricity does. Each person is infinitely complex, free thinking, with personal predilections that cannot be defined by immutable physical law.
And this discussion is exactly the discussion you're discussing we need. Odd circularity.
Electricity drama continues.
Yup...
😂
Truly shocking
Dafuq Y’all care bout how electricity is cooked. All I care I charge my phone and can scroll tiktok !!!!
@@MrUssy101 But if you're using TikTok does it really matter what you think?👀
Thank you for taking the time to produce and share this video. I've been an EE for close to 20 years and I'm a bit embarrassed to admit that only now am I starting to fully appreciate the importance of E and B fields in the behaviour of circuits.
“The Final Theory: Rethinking Our Scientific Legacy”, Mark McCutcheon for proper physics, including electricity.
If you are an EE, you should know that Derek's video is WRONG. . . . The Current, the power of DC is INSIDE the wire, not any external fields.
Electricity is expanding electrons crossing over from the subatomic realm to atomic realm spiraling around the outside mostly- ‘skin effect ‘- mistakenly called E and B. Without reading you will remain ignorant. Sad, but true.
@@hughleyton693 In a real world system you will always have R L and C components in your power transmission equivalent circuit diagram…the L’s and C’ will provide temporary lossless storage of the energy that is not at that instance a current flowing through the load resistance.
A good transmission system will have low Resistance wires (as compared to the current they will carry. The reason for Power Transmission using 10,000+ volts is to keep the current in the wires much lower than if it were 120v. If the wires were perfect conductors, you would not need the extra high voltage
What a great time to be alive. Hundreds of years ago this discussion would be hold in books or university talks that were unavailable to the vast majority of society. Now, it is being done publically, everyone with access to internet can live this experience. It is amazing and it makes me feel like one 17th century student watching a heated physics debate.
If you had been at Pizza the other week, you could have heard everyone having a discussion LOUDLY about how an airplane flies.
It was chaos, even a table next to us got in on it.
OF COURSE they were all wrong.
Here, there is a tool that measures the presence of the electrons (that you can buy at Home Depot) and it measures (checks) the wire for charge with no load (light off).
Every electrician carries one.
By hundreds of years, you mean 20 years ago. 30 years ago you could only find this stuff in books and university talks. 20 years ago you could find it on the internet in niche global scholarly community discussions through text. Scholars discussing things with scholars still, just faster and further; on things like message boards and news groups. Just a handful of years after that we went from text discussion to full video and audio conversation
My thoughts exactly! We are in the public discourse of an amazing intellectual exhange.
One might argue, what a bad time to be alive. Yes interlectual discussions have a great canvas to be painted on but if you compare the count of interlectual discussions to the count of moronic discussions by people who not even have a little understanding of what they are talking about, the time we live in just feels so off balance ....
What a great comment! My thoughts too.
Anybody critical or skeptical of science should watch and learn how this conversation has progressed. Props to Derek and the other RUclips creators for a beautiful demonstration of the scientific method.
Toss a coin to your witcher...er electrician
“Science is wrong sometimes” was one of the most infuriating comments because the entire POINT of science is being wrong, and later learning WHY it is wrong. If science could only be correct it would be a fallacy that could not exist.
well, shouldn't we be skeptical tho
@@ptrkmr the faster one figures out where something is wrong the faster they are closer to being right.
@@ptrkmr that's the problem with globe proponents, they have nothing but fallacious reasoning and sophistry to prove their globe claims
As an electrician working in the field, I can confidently say: This is above my pay grade.
I suspect you are right. . . . Derek was very WRONG on this. . . . Not only do I work in the electrician field, in house and factory wiring, from 120V AC up through 480V 3-phase and 1 MVA Generators, I also work in the DC field, some DC I worked with was over 5,000 Amps... I work from DC, through 50 / 60 Hz right up through the Radio frequencies, and up into Microwave fre2quencies, so I know Derek's video is WRONG.
@@hughleyton693 That's almost like saying a butcher makes a good surgeon..
@hughleyton693 my man
Anybody worth their damn knows this video is right
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Being humble to admit your mistakes and learn from other perspectives is what science is all about. No ego, just learning and discovering something new is amazing, our society needs more of this today
I don’t know where you got the admitting mistakes from. He pretty much calling everyone wrong in this video
@@Nnm2615:55 dude. You dont pay attention to vdo then just dont comment
@@Nnm26he literally said his model is wrong and his solution is adding capacitors
@@namothegamui2573 no YOU don’t understand. He’s only adding the capacitor to get his point across.
@@Nnm26 “so our original circuit diagram is flawed” ah yes that doesnt sound like he admit mistake at all yea.
Both videos were successful in that they taught many people, including myself, a very interesting aspect of electricity.
Better drama than Netflix offers!
This also answered my biggest electricity question: How do the electrons KNOW they are going to get SUCKED into the other end?
I have learned alot
Hi Nathan Rich ,ccp puppet why are you here ?
Ah yes, you, the guy who spread CCP propoganda. Why are you here, mate?
What I love about this is that this is truly an application of the scientific method within the scientific community. One person (or group) makes an experiment and hypothesis, peers challenge/prove/disprove the original hypothesis, and experiment with their own experiments, explanations, and hypotheses, and then communicate back to the scientific community. This results in further testable hypotheses and finally consensus. Those that question science sometime feel that science is a collection of edicts set in stone foisted upon them by the elite, but science is beautiful because it demands challenge for it work!
I wish I were a writer to explain my thoughts better, but this video and situation surrounding it were simply too inspiring not to comment on.
Your thoughts are explained very clearly. The point you make about the scientific method is very well written.
THIS is what I enjoyed the most about this rebuttal. The clearly demonstrated effect of the "Scientific Method" for sure. I will admit that some of the electrical terminology escapes me but the responses to the first presentation from so many people of so many different education types and levels is awesome ! To know that a "simple" video posted online garners so much attention from such talented and dedicated people around the world is mind-blowing. There would be no way to tell people even 10 years ago that such a thing would be so commonplace and expected that nobody would notice or care that it happens all the time now. We should pause a few minutes and reflect on that. Truly amazing really. I wish I had access to this sort of thing those many years ago when I was growing up. All the knowledge that is available today ... the hard part now is to know what the question is. Hmmmm... 42 ?
Derek is like Russia right now, he fought all those "internet scientist NATO" alone, where they keep telling him and also the entire internet world that Derek is wrong, but Derek persists that they don't understand what he's trying to do
Exactly my toughts!
What a great way to show the scientific method!
RUclips appears to be where science can actually happen, rather than the politico corporate crap touted in the old school
Fantastic to see experts, engineers, and scientists calling each other out in the interest of providing good science and accurate information. Then we see competitive and collaborative discussion that results in getting to the heart of the matter and getting as close as we can (for now) to the truth of it. Without vitriol or maliciousness.
This is the scientific method playing itself out in front of you...postulation of a hypothesis, design of experiment, publish results, hypothesis and experiment get peer-reviewed, watch those results be reproduced. So freaking awesome...even if it was kind of accidental. :)
I think a better electrical analogy is not water flow but *Pressurized Air*
The *Energy* of electricity (NOT the electrons themselves but the energy) are like gas molecules at an equal but high and constant pressure throughout the circuit trying to disperse in all directions.
The wires are like very efficient but slightly porus pipes, while the electrical device like a light bulb is a *Release Valve* that makes use of that energy.
The pipes ( *Wires* ) efficiently funnel most of the air pressure ( *Energy* ) towards a release valve ( *Light Bulb* )
Note:
The Switch that closes the circuit in this analogy is not a valve, it just allows for a *Pressurized Environment* for the pipes ( *Wires* ) and the releasing valve ( *Light Bulb* )
The Battery in this analogy would of course be the Pressure Tank, but of 2 valves where it's air (energy) will only escape when both of it's valves are alowed to pass through the 2 pipes ( + & - wires ) out through the same circuit, releasing pressure out through a valve (light bulb) in the form of heat and light.
This analogy explains things like Voltage and Resistance like why wires are less efficient the longer, thinner, and less insulated they are.
-Porus pipes will release more air the longer they are (more pipe = more pores) while thinner porus pipes can't are unable to pass as much pressure ( *current/voltage* ) causing resistance.
If there is no valve in the closed circuit the pressure ( *Energy* ) can only be released through the pores within the pipes ( *Wires* ) eventually bursting the pipes ( *frying the circuit* ) from the amount of high pressure.
Would this be a better analogy for layman's terms?
Well the only time vitriol or malice is required is when your argument cant stand up to other points of view. And perhaps you've tied your ego to it.
@@MultiChrisjb we know that.
That's great and all but I've lost respect for him, because he proposes a lightbulb that comes on instantly with any flow of electricity. Such a light bulb would have 0 resistance, yet he uses a resistor as a stand in. What's more, such a light bulb would come on instantly in the presence of any moving magnetic field. In other words, turning such a light bulb off would be much more impressive feat than turning it on instantly with an insanely long superconducting wire connecting it.
The fact that he doesn't realize that his physical experiment isn't even remotely analogous to his hypothesis despite even having a lot of back and forth with someone who's made videos pointing out those errors has made me lose respect. Scientists are self correcting, Veritasium is not.
I am a data scientist, a field completely unrelated to electrical engineering, I don't like when I see people just saying "he is wrong, and he is unreliable because of that". I see the inflated EGO in that person.
But when you see an active collaboration, people making experiments, sharing knowledge with the community, watching others videos, explaining concepts... That, people, that is the essence of science.
And I really love that!! ❤
Thank you Derek for this!
I'm glad this was clarified. This is super advanced, but incredibly interesting.
As a first year electrical engineering student my brain is melting at the implications.
@@guydunn5354 The whole way through I'm thinking of the implications for PCBs and then sure enough the PCB guy shows up.
It wasn't clarified, it was corrected. Rather than admit his errors, he just ignored them, and presented it again using the arguments of his critics, but as if all his critics misunderstood him. No, veritasium misunderstood what would happen and his previous video was just wrong. Guy, as a first year EE student, you probably already knew about capacitance and capacitors, but it is good to start thinking early about the fact that all conductors have shared capacitance between them....you have lots of capacitances in every circuit whether there are actual capacitors there or not...most of them just aren't large enough to do anything -- turn on a light, for example.
You either accept Maxwell's Equations or you don't. If you do then the important issue here is that Veritsium's presentation relies on transients and the dE/dt and dB/dt terms. In the case of DC scenario, however, the current density J is the ONLY source of the B field so whilst factually correct Veritasium's presentation is misleading. Whilst the field is present the Poynting Vector E X B is in turn due to the movement of charge INSIDE the cable.
Also as a veteran PCB designer I can confirm that none of the comments apply to DC-only PCB designs unless transients are important.
Half of this video was over my head, I think the first video got it right for a general audience though it obviously didn't satisfy those with more specialist knowledge.
As a basic electrician in australia this makes perfect sense. We actually learn a little bit about it in trade school. It help us understand why certain circuits need shielding, why transformers work and why cables need to be distanced properly.
As a common clay of the earth peasant who somehow still managed get his laureate diploma in 3 years of university in informatics to im gonna say i lost the thought in first 5 minutes of this video and dint had any clue what was happening later beside the " oh i know the significant of this single word" but not the meaning of the whole phrase, yes the shepherd dogs and sheep was clear.. but nothing before or after it made sense for me
@@slaviceno Which word?
It also made a fair sum of sense as someone who's delved into networking. "Crosstalk" is a thing on ethernet cables, which explains all the shielding and wrapping.
Why do most men seem to come equipped with random knowledge of cars and electricity lmao
Monke brain see thing
Monke brain want to understand thing
Monke brain spend hours studying thing
Positive or negative, this is what true science and engineering is all about. The discourse and discussions you have with others in the fields, is, to borrow a phrase, brilliant. Great video.
Crucial 👉The Connections (2021) [short documentary] 💖
Why can't he say the word "antenna"?
Ac
I see what you did there
It’s more than that
Took me 2 years since this came out and about 2 months since I started tinkering with actual circuits to really understand what's going on. I knew fields had more to do with the flow of energy than electricity during my time in college by reading all the technical stuff but it's one of those things that become easy to ignore once you have built an intuition around a different model. Cool stuff, I'm glad I was finally able to come back and really understand it.
I think we as viewers can't appreciate enough how much work goes into the making of these graphical explanations. Creating these active images must take a significant time.
Yap and e reason,to tink it thru and thru and thru and only then start to tink about materials so whole apparatus preform on max,parts (depending on job, materials, friction not double check and energy is lost by over hitting or drifting all over so when you asembel it in your mind you just turned it on and you can after some time stop it, and look for how to maybe get some form to smut aut vibration, also energy lost cute to most efisent that you can do,after some time in virtual lab-brain, just copy from blue print Frome Etar ,from find out what is needed for all or to you like tool upgrade for jet easy and better preform vhail you can continue inventing , practically,greater,more this rock friendly,,,copy from the natural,, Viktor Shaunberg..3,6,9, frekfencije, wave, light and we cud be able to get Devin more, little by little if we continue inventing things that are really going to be need and justing to get some steps closer to are crietor by making all aut good for birds,plants,lend,voter,if we continue to that way I think that lot of people that are alive now,while be able to see forming on as real fizička wings i am Shure we just to have but,beacouse humanity took some rong turnns,we got little lost,but if we continue little slower and conses the wings while start to floris same as Creator Good all matey,we are going out to next generation we got to love the life,like we live the love, were heading out to aur Creator Good all we made by himself by the way of the hand of the almighty hvala,i slavimo tvorca našeg i sve božanstvene stvari iskonskom,pravom slavom života,dobra.
@@toxicdust2483 Expand on that.
@@alanyuan1049 That would mean having any idea or point beyond being a troll. Don't wait up for them.
Woooow and after lot of time ju came to , how much time we spent bay making a video about some topics to what teaching about what and hume
@@cr1197 woooow people i was born and raised in Balkan little state Serbija,and we don't just glagoljica but ćirilica so i notest that it really have big influence on witch language we think so i apologize to all serious people... about my western grama i am sorry for my bad English i not no how to tip out my thoughts
This is why I love science, if something isn't entirely correct or is poorly explained lots of people go and test it to prove it wrong and demonstrate why, so we end up with even better explanations for things :)
This is true except when it comes to abiogenesis and evolution
@@Beanskiiii agree, i may like the evolution theory, but in the end, there is so much unexplained on why we ended up on how we are, hopefully we gain more information.
Except for when no dissent is allowed on a topic and all credible discussion of that dissent is banned from all public platforms. Then it's not science, it's propaganda.
If it worked out perfect every time there wouldn't be any scientific advancement
@@Tooob what do you consider credible discussion about that?
What an interesting video. As a high Voltage linemen I have experienced this field while working under transmission lines. We measured voltage on our truck of 275 volts measured truck to dirt. We could also take light bulbs and light them up while connected to nothing, just under the lines. Really cool stuff. Still a bit hard to wrap ones head around, but i think you did a great job
I tell ppl and they don't believe me LMAO under the power lines swinGinG fluorescent bulbs around like liGhtsabers 😂😂😂. I used to Go floatinG down the river every Sunday when I was 21 BC it was my only day off and what a better way to spend it than a Giant lazy river where you don't Get cell service??? It was nice way to unpluG, well anyway at the end of the float there is a section of power lines that you pass under and you know to start GettinG ready for the exit. This Guy that used to float with us was a little older than me and would swear that sometimes the old Gospel AM station around here would just be playinG in the air when you Got to the power lines and we all thouGht he was bat sh!t crazy until the Gospel station was playinG faintly one day when we floated under the lines and it blew my mind and I learned about RF induction. 🤯🤯🤯
Awesome!
Can we cummunicate faster than light using electric fields in lasers?🤔
@@skreenname229 Just to clarify... You mean that actual sound could be heard somewhere below the power lines because of RF induction in the power lines?
@@AndreAbascal Where would the demodulation be?
Great explanation! I've been researching all kinds of E&M applications for longer than I care to admit, yet I still find myself taken aback all the time when a marvelously intuitive explanation like yours comes around to disabuse my common misinterpretations. So thank you for the new perspective and clarity. I'll be sure to pay it forward and better elaborate to those I've instructed to merely calculate.
I just love all of this. I mean the bigger picture of it, the fact that we live in a time where people "fight" to find the best way of explaining things and improve our collective understanding of science. And we all watch these videos and read comments and is absolutely beautiful. I think this is the right direction for humanity, a place where all of us are curious, and we try to understand the world around us and discover maybe new things and most importantly, find ways to explain what we already know to others. Kudos to these youtubers building this kind of space.
^this 100%
but they simply end up with, I am right and you are wrong, ....do you think that's how people should do science? simply like religion dogma?
yes, just like in the 1800s at the first universities, but now with everybody watching. Science happens in the collective.
Can you debunk this? 👉The Connections (2021) [short documentary] 💖
You've also hinted at the best trick to asking for help on the Internet: never just ask the question; ask the question AND THEN answer it incorrectly. Far more people are interested in correcting others than simply helping them.
But he didn't answer it incorrectly, he just wasn't clear enough ;-)
@@JBDazen Many of us _thought_ he was incorrect due to the lack of clarity of the explanation. But that had the same effect on the peanut gallery :)
I feel like this has been a major force in the advance in science throughout history. Someone makes a claim and people can't wait to tell them that they are wrong. The modern theories are the ones that have stood up to all the arrows being fired at it.
@@madkem1 yeah honestly seems about right. Same goes for new tech. Most things seem like a bad idea at first and need to be proven. I imagine the first guy to say "forget swords, we need to be making as many metal tubes, tiny balls, and as much black powder as we can" sounded pretty dumb at the time.
Wow that's awesome, I will use this technique from now.
Veritasium in the last year or two has really revived my hope that youtube science can be more than either crazy conspiracy videos or purely informational. He's doing the closest a pop-scientist has done to science since the mythbusters, and he's arguably added the important step of peer review into his process.
"can be more than crazy conspiracy videos"? What have you been watching to think that of youtube? Everyone knows this is a platform for Cat Videos.
I encourage you to take a look at the youtube channel "Kurzgesagt in a Nutshell". Highly informative and entertaining educational animations about all aspects of Science and reality.
@@zaferalabbas Kurzgesagt is so good and fills me with just the best dread....
@@cryinmonkey2003 or 3 blue 1 brown
@@quasa0 or
THANK YOU SO MUCH!!!!! I'm a mech eng who studied circuits in eng school and it never made sense to me!!!! I was like...well if the electrons drift so slow...what actually carries the charge? And yet they wanted me to do calculations equating the charge and the electron. It was so confusing! It never made sense! I could do the calcs...but I never had an intuitive grasp of it. The charge is in the FIELDS!!!! Now that I have the fundamental building blocks corrected...electical eng does not seem so opaque...and I may take up the study now that I get it! I guess I should have stuck with Maxwell's equations. But ME's don't get that deep. Thank you!!!
The electrons do carry charge. A charge (being a charged particle) in an electric field has a force on it. Work is done when energy is converted from one form to another (Work = Force x Distance). Heat is created when electrons are forced through a wire.
The use of Maxwell's equations do not involve the Poynting vector. The Poynting vector is not required to explain the initial current on the load side of the circuit. The Poynting vector is used here to infer energy flow through space.
(A charge moving through a magnetic field also has a force on it).
I studied mechanical engineering at university and have never heard such a clear explanation of how electricity works! This video is awesome
This kind of thing is how humanity develops. The next generations are the ones who will be pushing the world forwards. Education like this is game changing. No doubt many teachers will be incorporating this!
And few days later your brain will be washed with another theory 😂
I agree, and am now subscribed.
can now someone explain workings of battery if charges dont move ???
@@Anonymous20289 You good bro?
V: "The surface charge description is omitted from most textbooks..."
Me: "Weird, I remember hearing about that in my E&M class."
V: "...but there's a great treatment of it in Matter and Interactions by Chabay and Sherwood."
Me: "Hey, I recognize that book!"
Can you debunk this? 👉The Connections (2021) [short documentary] 💖
It honestly feels like a brand new genre of RUclips Science. Idk how many other science videos are out there like this, but many of the best math and science RUclipsrs were referenced in this epic meta-analysis of RUclips science thought. This felt bigger, like vlog peer review. Think of the potential!!! Thanks Veritasium!
can now someone explain workings of battery if charges dont move ???
This was my thought as well, I made a note to use this video as an example of how the scientific method and peer review can work. it makes you see the real potential to educate among those who for whatever reason don't want to delve too deeply into the text books, but want to go further than the standard videos and documentaries will usually go. thoroughly enjoyable!
@@Best-um3eq I could be wrong since I'm not properly educated on this, but I would say newton's equal and opposite reaction explains it well. The difference in charge potential is what initially sets off the electrical field cascade. The field acts on the charges within the battery so they drive each other continuously, equal and opposite. Until the potential charge difference is equalized, and so then the circuit charges can equalize to a stable state as well.
@@himan12345678 you missed important concept of Neil boht. Classical physics don't apply there
Crucial 👉The Connections (2021) [short documentary] 💖
Insane how in depth this video is, shoutout to you guys for going to the trouble of clarifying everything and explaining so clearly.
Seeing Maxwell’s equations in action with a circuit has fundamentally opened my eyes to the mysteries of electricity that I never quite understood in the past. This will forever change the way I understand the exciting concept of electricity. Thanks
I wanted to say this. I was taught electricity in the simple way, and the visual just shortcuts such an incredible amount of reading and trying to picture it in your head.
Ever seen those DNA visualized in 3D videos? Or PBS SpaceTime? I've learned more on RUclips than I did in school! 😂
me too
Electricity should be taught in this way. Now that we have the processing power to illustrate the effect of maxwell's equations in real time in a software, we should show it to students and teach them about it that way; its easier to learn by watching.
I never really understood electricity because all those equations seemed too abstract. I really appreciate videos like this for actually making me understand things.
@@vigilantcosmicpenguin8721 this
I love how feedback from the community resulted in an even more thorough answer than the original video.
And this follow-up too lol
I decided to become a Civil Engineer and not an Electrical Engineer mostly because I didn't understand the electric curcuit and found nobody explaining it to me. Electrons were pushing each other and somehow the fields were part of the show. Now, more than thirty years later, I saw your video, Derek, and I only can thank you very much. I wish you all the best from Germany
ready to change career now?
Beta
Did YOU make vedio showing the misconception of misconception…. Wait that’s a cantors paradox
We suffer that here as well. To combat this we must discuss it!
Sarcasm?
Your work here is an exemplar of how the scientific method should function, with robust discussion and interaction! Thank you for sharing your pursuit for truth and knowledge!
It's interesting that we get to see scientists discuss this stuff over media in our era
These guys are less scientists and more Science Communicators™
If you think veritasium is a scientist of any value I’m sorry but you need to meet some real scientists who do real work.
@@LucasCarter2 you need to explain more for your comment to have any value
@@LucasCarter2 More of a scientist than you
@@LucasCarter2 He has a PhD in physics brother. Even if he is not a scientist by profession, he has to have been at one point and is certainly still qualified.
it makes me so happy to see the RUclips science community coming together and working on stuff like this peacefully happily and cooperatively especially in such awful times
wym by "awful times"
But... the serious questions weren't answered. Race relations, gender identity, pronouns, religion, what is a woman!?
This guy is getting canceled for not having social equity in his video, there was no representation of women and the only person I caught that might have been non-caucasian was relegated to the distant background.
...I hate that the current societal landscape makes me immediately jump to these ridiculous thoughts any time I see mention of peaceful coexistence. This is satire*.
@@adamself2463 ask any religious leaders if they can take the criticism or not.. and this is not science not politics to you can just get out of here. Nobody wants you... nobody likes you... you are alone.
If you focus on science as a profession or rather even a hobby you don't even bring up unrelated cultural changes. Be careful what you watch on the internet and stick to speaking to real people in the real world. These issues hardly come up IRL.
@@adamself2463 Hey, if you don't mind could you please clarify what you said? Derek is getting cancelled for not representing women or other race people ?
This video goes so deep that the boundaries between energy transmission by cable and by radio disappear.
This is very complicated for a non-expert and can hardly be explained more simply than in this video. Thank you.
A transformer using the magnetic field of the primary wire coil to induce power to the secondary coil. I believe is what he is trying to illustrate by showing that with the wires close together, a voltage is jumping across instead of traveling down the lengths of the entire wire. It is inducing a voltage to the wire with its magnetic field.
@@famousadio was thinking the same thing but Faraday's Law (which is when you refer to coils and magnetic field explanation) is to create a new voltage source. The secondary end of the transformer is just another voltage source . In this video the unintuitive thing is the way in which a load can reach its energy from an electric source. .
Can someone confirm if 11:22 is wrong or not. I've never heard of a moving electric field giving you an induced (induced because it is happening across an air gap) voltage. This video says 5V induced across the resistor and 14mW of power dissipated over the 'short gap' time before the bulk of the energy gets to it over the longer cable path. We know the cable has very good electric and magnetic permitivity properties which is why the energy doesn't dissipate away as easily. However across an air gap the permitvity basically sucks and is technically where all the energy is actually dissipated in an electric motor. The air gap in this circuit is just extremely big. Motor Air gaps are a key design and affect overall strength of magnetic circuit and motor efficiency.
Only Faraday's Law is what I accept at giving you induced voltage to a new circuit across a gap but only from a moving magnetic field.
I bet there would be simpler explanations if people weren't coddled with plain wrong explanations that refuse to make sense at higher levels of understanding. The objective should be to give a lesser understanding, not a hobbled understanding.
My first thought on seeing this explanation was "...did Derek just invent an antenna?"
My first thought on seeing this explanation was "...did Derek just invent an antenna?"
After watching your first video, I was kinda confused on how the magnetic field made the bulb produce light, but this video cleared it up, thanks
Happy that you finally did the follow-up video. It's excellent and well thought out and adds some excellent new detail. It won't stop the nerds arguing though, the EEVblog forum thread on the video is up to 75 PAGES of debate, LOL. The argument comes down to the fact that most practical engineers do not need to think in these terms, especially at DC. But I think you can sleep well at night after this one.
The only thing I didn't see mentioned was the Quantum Electrodynamics (QED) hypothesis that might ultimately trump Poynting and Maxwell when it comes to energy flow inside vs outside the wire. But I can understand how that might side track this video completely.
I know the Poynting/Maxwell math still works out for DC, but it's just The Vibe. So it's inside the wire at DC for this crusty electronics engineer :-P
Well done.
I would love to see a QED explanation in terms of virtual photons and stuff!
@@tpog1 I was thinking of finding the world expert on QED and having a chat, anyone know who that is? I think that if you can do a physical experiment to prove QED and energy flow inside a wire, you'd win a Nobel prize. and change physics forever. And that's the problem with discussing it, AFAIK there is no practical experiment confirming it. I tried to read some researc papers on it, but my head exploded.
Yep, the biggest issue was the lack of unit on the answer, rather than the question itself.
do you think we know everything there is to know about electricity yet ?
also, whatever we do know, do you think that is completely correct?
would love an answer to these questions. (sorry im a noob when it comes to this)
@@EpicBunty Do we know everything? - Probably not. QED sound promising, and if true it likely trumps Maxwell/Poynting theory. In the same way that Einsteins general theory of relatively up-ended Newtons.
What we already know - Maxwell/Poynting is correct, because it provides a method to explain things that verifies with actual measurements. But we also still use Newtons laws to do lots of practical stuff, there is just a higher level theory available. We can't be 100% sure that a higher level theory above Maxwell/Poynting does not exist. And even if there is, for almost everything we'd still use Maxwell/Poynting anyway. And as Derek explained, we still use Ohms law and lumped transmission line theory, and transformer theory, and antenna theory to do practical stuff, because we don't need to fuss over the details or exactly how the energy flows.
I'm an ex-electrician and an electronics enthusiast from way back, and I've never heard such a thorough explanation of how electricity works from any of my text books and lecturers. Thanks. I learnt a lot.
As an Electrical Engineer that studied PCB design, like Rick Hartley, we were all too aware of field effect induction and transmission in arrayed semiconductor components. This video takes it from the nano world to the macro world and demands that all electronics be taught from Maxwell's understanding and not Ohm first.
Maxwell equations my friend! Dig dipper
We don't learn it in Physics studies either, and yet it is described in Feynman chapter 27 of book 2 ("Field Energy and Field Momentum", you can read it online). While even Feynman calls it "nuts", he agrees Derek's understanding is what the equations say and is the correct understanding. The fact that simulations that solve the Maxwell's equations show exactly that's what's happening should be sufficient to convince us that it's correct, as noone doubts Maxwell's equations, which have never failed and are correct under relativistic assumptions (in fact the B field is a consequence of relativistic movement of the electrons).
Me too. Same training as you. He is absolutely right. Love it. Got my brain going again.
@@andrewwashere9151 absolutely,
That's why I cannot understand the electricity because it is not clear with funadamentals, even I ask the lecturer, their answers doesn't satisfy
as a comp eng. major I remember spending hours trying to get intuition about how electrons are moving through a circuit with a battery. I remember googling around looking at forums, but never really getting a good explanation. This actually clears up so much. I wish they would go more in depth in basic physics textbooks so people like me don't have to waste so much time trying to get intuition.
When I was training as a communication technician, we were constantly expected to accept something and move on. My mind (and I suspect many of my co-workers) finds it difficult to work that way. I need to understand something fundamentally or I'm just confused. Needless to say, I wasn't a very good technician. 😂
Thankfully I had a really good professor in my introductory University Electrical Physics class and really cleared up many of the misconceptions for me. A good teacher will make all of the difference
Same. Wish I had an explanation like this when I was working circuits courses with EEs in my earlier years of my program.
@@aarondavis8943 Far too much of our educational and training systems operate that way, and it's terrible for the development of actual understanding (and thus in-depth troubleshooting). They default to shortcuts that feel too much like hand-wavy, religious faith "just trust me" arguments.
@@schroecat1 I've founf that what is happening is... those shortcuts... are from trying to condense 2 weeks of info into 2 minutes, it gets SO SHORT it becomes incorrect.
Derek DOES his homework, unlike everyone else.
A true physicist 😊😊❤
I wanted to say that as a viewer I really appreciate how you went about making this revisit.
It can often be too easy to defend one's position in a way that is basically just lashing out. Instead this was well put together and explanative
The video is well put together and exploitative but its a horrible defense of the previous video. People were not calling out the previous video because they disagreed with the physics they were calling it out because it was purposefully designed to confuse people. And this video really does not address that complaint. It addresses many of the specific aspects people found misleading but not by apologizing but by doubling down on considering them non issues.
@@peterisawesomeplease that complain is an asumption which I will suppose is false and as a result does not worth addressing or apologizing for.
This man is so dedicated to his work that when someone doubts his claims he just does it to see if he was right or wrong.
thats science
Dafuq Y’all care bout how electricity is cooked. All I care I charge my phone and can scroll tiktok !!!!
@SoftserveSodium ?
Isn't that the scientific method?
I mean he wasn't the first RUclipsr to do this experiment. AFAIK AlphaPhoenix was in response to Veritasium's video.
Edit: Ah, Derek acknowledges him later in the video, my bad.
Me: trying to grossly overly simplify everything so anyone can understand.
Veritasium: ha! I'm going to melt everyone's mind and make them question reality, hold my beer.
+1 new sub
Dafuq Y’all care bout how electricity is cooked. All I care I charge my phone and can scroll tiktok !!!!
haha
My brain: imma head out
@@MrUssy101 bruh lol
Thanks for the video Derek. This video brought a greater understanding to me of how electricity works. Now I want to challenge you to either prove or disprove that high-end audio cables make a difference in sound.
Congrats mate for perfectly embodying the scientific method. Thanks for not having an academic tantrum & making another video to clarify your position. This is how science moves forward. Cheers
Most academics wouldn't have a tantrum, but there is a reasonably large minority of *really* bad egos that make a lot of noise.
Aint no way veritasium would have a tantrum over academics
@@EvanPilb He just did. That's what this video is. He was wrong and yet insists that he was correct because he claims to have actually meant something other than what he originally said. Why he couldn't just admit that his previous video was incorrect and then reshape his argument I'll never know.
This follow-up video is one of the best examples I've seen of some of the foundations of science:
- The peer-review principle
- Test the theory against experiments and calculations
- Adjust/clarify the conclutions
Well done!
Not only that, but actually being excited about people trying to disprove your theory is the mark of a real scientist. Science advances just as much, if not more, when a theory is proved incorrect.
"No amount of experimentation can ever prove me right, a single experiment can prove me wrong." -Albert Einstein
He still screwed up. He needs to arrange the wire to eliminate induction. In which case the initial induction can be reduced to as close to zero as you want. Just arrange the wires in giant circles so the are no two battery/light wires running parallel. Only battrry/battety or light/light wires in paralllel. Then no induction can happen.
Of course the forces are transmitted by fields (electons and protons do not touch each other). Both protons and electrons themselves are waves. Plus the induction can only happen for a short time period as there is a change in net velocity of the electrons from "net still" to a whatever speed they travel. Once they achieve an equilobrum in speed the NO induction will occur between any of wires.
He still doesn't understand the standard model and this is just a much of a fail as the last video. I could spend all day on his errors.
For example the field merely changing around the wire in the air is not transmitting energy/power at all. Why? Because there is nothing for it to act on.
This video is still a comedy of errors. I am also disappointed these trained scientists aren't calling him on it. Although I am not surprised. I used to sit through various math and science classes where other students and even the teacher would have a kind of rote memorized understanding but no good model in their head.
Electrons move around the vicinity of atoms all the time generating net collectively changing fields and also not transmitting any power. DUH!!! Only under special circumstances will power be transmitted to things in the fields when they change. Same with electrons flowing through the wires in might house. I am sitting in those fields right now and I am not "lighting up".
@@brianmacker1288 Since you're clear on the errors here and understand the true mechanism of electric power transmission, would you be able to explain it to me? I'm afraid I am no physicist and don't have your level of insight.
@@kingbolo4579The subject is too complex to explain in any great detail in a comment section. Charged particles can act at a distance which is why electrons traveling in one wire can induce the flow of electrons in another. They generate electric and magnetic fields which are NOT confined to any wire. Fields that can store and transmit energy. Electrons can also emit and absorb radiation under certain circumstances. There is a dispute here over two different perspectives of the same phenomena. It is incorrect to claim that the electrons flowing in a wire cannot carry any energy. It is also incorrect to view the surface electrons on a wire as sitting static and as separate from the sea of valence electrons that are in constant random motion in any metal. All the electrons of a metal are equal in their membership in that sea of electrons, even when there is an excess, and are free to move in any direction with the metal. The matrix of positive atoms actually is interior to this sea of electrons. So every single electron in the sea is inside the metal at all times. Surface electrons are NOT outside the metal. Electrons have mass and as they move in an electric field the gain velocity and thus momentum. Thus electrons can carry energy inside a wire as they flow with an electric field gaining momentum. It is however a very chaotic process with electrons "bouncing" about repelled by each other like atoms in a gas. They can transfer some of this momentum to atoms in the wire, resistor, or light filiment by losing velocity during a bounce, which will heat up the wire or light filiment or resistor.
There are other perspectives to think about this however it is perfectly valid to say that "energy flows in wires" because it can.
When you lift an apple off the ground we claim it is storing potential energy. Later when dropped that potential energy is release. It is perfectly valid to model from the apples perspective and not from the perspective of the Earth or the gravitational field. When you lift the apple the Earth is also deflected downward a miniscule amount. When you drop the apple the Earth deflects slightly towards the apple. This can be ignored because of the relative enofmity of the Earth. One could generate a Poyning vector representation of this which would show the energy being stored in the gravity field. It is just a different perspective on the same thing. There will be situations where the apple prespective is a poor model. That doesn't mean other perspectives are not correct. A dropped apple is either falling or orbiting the earth depending on perspective. Same with a weather satellite. In reality both fslling and orbiting are working by the same mechanism gravity fields.
To say "energy does not flow in wires" is as wrong as claiming "apples do not fall". Energy does flow in wires but can also be thought of as flowing in the fields too, or even being stored in fields. One does not exclude the other.
@@kingbolo4579 First comment of a series of comments.
When a switch is flipped and electrons begin to flow in a live wire they cause an electro magnetic field which can push on or deflect other electrons in the same wire or other pieces of metal. Thus when arranged certain ways can cause a current to flow in a different section of the same wire or another wire "by induction".
Two wires running parallel to each other are prone the this effect. This is because the currents expanding magnetic field causes the other wire to act as is it were in motion relative to a stationary field. Using the "right hand rule" we can see that a current is induced in a parallel wire in the opposite direction. The closer the wires the greater this induction effect. The parallel wire draw energy from the field to generate the current. Which is actually accomplished by an slowing of the electons in the live wire.
This effect stops once the current stablizes at maximum flow, and the magneti field has finished expanding locally. The other wire now experiences a static magnetic field, and does not sct as if moving through a magnetic field. No more current will be induced in the parallel wire. Resistance in that wire will dissipate the induced current. Eventually no current will be flowing.
If the current is turned off in the live wire the magnetic field collapses.
When the switch is turned off the opposite occurs. The electrons slow in the off live wire. The magnetic field lines collapse inward. The parallel wire now acts as if moving through a magnetic field but in the opposite direction. A current is for a short period induced in the opposite direction from before. Veritasium and Electroboom both missed this fact.
In both cases the induced current will normally be much smaller than the live current. Not enough to light a bulb which would normally be connected to the live wire.
In his setup you could rapidly turn the switch on, then off. In 1/c seconds an induced current would flow one way. Suppose you waited say 1000/c and switched it off (the electrons having only flowed 1000 meters down the wire at best). In around 1/c seconds after switching it off the light bulb would experience a second induced current in the opposite direction. The current would briefly stop, then reverse.
So if he is counting that miniscule current as "the light turning on". Then turning the switch on would "turn on" the light. Flipping the switch off would briefly turn off the light, but for a moment it would turn back on and off as the magnetic field collasped fully. It is actually much more complicated as there would be a current pulse spreading down the wire with diminising power ( unlike if the switch remained on).
I love internet science. Like this is the exact thing that happened with scientists hundreds of years ago, just much slower because of communication technology. A bunch of people who make a claim, people dispute it, they run the experiment. Its just brilliant.
kind of. it's even more exciting when it's new and not communicating something already-known
@@Th3EpitapH Yes thats true. But most new stuff is way out of scope for the average person (for now). And to be fair I feel like most people didn't know much of this information. Im in a college physics class right now and they didn't really touch on the idea of the fields move the energy not the electrons
I see what you are saying. internet arguments between scientists as akin to the 1800 with letters and challenges to eachother.
@@Th3EpitapH Well i did not know any of this and i graduated from Electronics
@@anacreon212 yeah but those were actually educated people...the internet comprises the masses of mediocre knowledge. Letters of scientists in the 1800s were by experts who pushed the field forward. This forum is for people who didn't know how electricity works 30 minutes ago :-\
Ok I don't know much but form my perspective,
In a simple circuit, when a battery is connected, it provides potential difference and creates an electric field that propagates almost instantaneously through the wires have speed equal to speed light C, driving electrons to move and create a current.
And we have question: does elctron really move?
Answer is Yes they do , but here is catch, electrons do move slowly (drift velocity) in fact very slowly, and the actual energy transfer occurs through the electromagnetic field established by the electric and magnetic forces around the wire.
And you ask how EM field move and tranfer energy?
Answer is poyntig vector,
The Poynting vector describes how this energy flows outside the conductor, not by the physical movement of electrons.
About bulb .
Inside the bulb’s filament, electrical energy is converted into heat through Joule heating, causing the filament to glow via incandescence. While electrons play a role, it is the electric field and electromagnetic energy transfer that power the circuit and light the bulb.
I think 🤔 this may help to understand all.
for more details For enthusiastic science people, i want to include quantum mechanics, elctron are not actual particle, but they create elctron cloud around nuclear in their perticular energy levels, we may also called them 'Fermi gas '. they obey Fermi dirac statistic for charge distribution. And The quantum nature of electrons means that their exact positions and velocities are governed by probabilities. However, the collective behavior of many electrons leads to the observable flow of current.
People really need to remember that most engineering-centric views of the world are, at their core, useful simplifications. Just like how an electrical engineer doesn't need to think about quarks when discussing how semiconductors work (since it is more or less "irrelevant"), an electrical engineer also doesn't need to "fully" consider how energy is actually dissipated to a load, but instead must simply understand and be able to model (with a sufficient degree of accuracy) what is happening. As a computer engineer, I also like to think of this as an abstraction, similar to how someone writing software really doesn't need to understand "exactly" what the CPU is doing in order to sufficiently write a piece of software (unless you are obviously writing low-level code which interacts with assembly or something).
Its called Reductionism my friend, and there is a reason why it works for the general public.
Spherical cow in a vacuum for the win
By people you mean engineers right? They're the first people who need to realize the limitations of their own knowledge and field
This applies to most discussion in general. It turns out that a lot of things are more nuanced than they appear on the surface, and many disagreements stem simply from having a slightly different conception of something, or the definitions of things being discussed. Whenever I find myself in a conversation with someone who is reactionary or jumps to conclusions based on a few words they just heard, I'm reminded of this.
I feel like that's the thing he didn't address at all here! He went as "corrected" misunderstandings (that shouldn't have been) but his narrative stays: "school lies to you"... by proxy people will take it as science/engineering lies to you. However this is not what it's all about. As you say, its a model to describe something! But him saying it's a lie creates more distrust than necessary...
Derek has elevated his RUclips game from breaking down complex concepts into simple videos that the general masses can enjoy to complexifying "simple" concepts taught in high school and entry level physics college courses to upper class/masters/PhD levels to entertain the general masses.
Derek finally proved that I wasn't hallucinating through my electrical engineering classes. These concepts makes no sense in the normal sense even after 2 years of learning this, and he nails explaining them.
Well said.
@@Newend03 he is probably the most qualified to explain, I believe he has a doctoral degree in physics education
@@Newend03 I agree. Before I watched the last video I had worked out everything(intuitively and with material over a period of 3 years). Except I didn't make the connection that the energy is in the fields. That revelation blew my mind.
But it also makes sense because I had never understood poynting theorem before. And hence never thought that it would have active use in the real world.
Simple videos? His videos are complicated on purpose for the wow factor and the show. His apologies for leaving out the units were not sincere. He is too smart to have left out that detail
This saga has been one of the most interesting and wholesome things I've ever seen on youtube. Your first video led me to [re]discovering electroboom, alpha phoenix, and a few more awesome science channels. Watching everyone's different critiques and explanations was a kind of deep dive I didn't know I needed. Thanks, Derek.
Did you see the whole thing about a wind-powered vehicle going faster than the wind? That was a pretty intense saga as well.
@@MagiciteHeart Veritasium pushing the boundaries of YT
After a few months, another contradicting "scientific fact" will emerge
Can you debunk this? 👉The Connections (2021) [short documentary] 💖
Honestly. Thank this guy for highlighting this. Last year when I was getting into Electronics. I was convinced that there was something awkward about the explanations of how electricity actually worked in relation to the circuits.
11:08 "And at that instant, the electric field inside the conductor is no longer zero..." Thank you! I felt like I was only person saying this out loud.
Ur verified and I like ur comment first. So hi 👋
Hey Nick!!
Happy to see you here, Nick!! =)
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Gaming channel playing all Souls games when???
Glad to see the age-old tradition of scientists/engineers ripping into a colleague's experiment and eventually ending on "huh you were right, that's pretty cool" is alive and well
Too bad that this age-old tradition isn't also being consistently applied in medicine which claims to "follow the science".
@@barrypenobscott9882 what are you even talking about
@@ivkuben4022 have you been living under a rock for the last two years? You really have no idea what he's talking about?
@@barrypenobscott9882 medicine follows the science, but the science is limited by capitalism, regulatory institutions, & universities all run by the same people. To fix this we need to a) fully & publicly fund medical & pharmaceutical research at independent labs, and b) permanently divorce government regulatory institutions from the private pharmaceutical industry (and all private industry for that matter). As for the vaccines they did the best they could within the framework we have (and I'm happy with mine because I spent a weekend with and shared a meal and spoon with someone who had contracted Delta and I didn't get it). We MUST change the framework.
@@bumblebootwiddletoes5185 So true.
This back and forth between all these people has been pure awesomeness!! Most of them are squeezing their brains to show as clear as possible some very interesting stuff about electronics, and almost none of them are being deliberately deceptive nor misleading in their arguments. It's great to see that we can engage between people this way!
yes!
True...
If only the uneducated section of our society could be a little more polite like this too.. if only the whole internet was like this.
And then I’m the same universe flat earthers exist
Could you imagine if everyone reacted to criticism this way?
I'm an electronic engineer. Due to your idea of proving something, lots of point of views came out, and I could say we are all amazed by the way nature really works. Lots of credit & respect to your channel!!
So would you say that if I took a standard light socket, and got a little led close enough to it, that it would turn on?
The Earth has a giant magnetic field, why don’t we just have free electricity from that?
I'm not an engineer or an electrician, but I remember years ago seeing fluorescent tubes being lit up just being near high voltage lines and my mind was blown and I realised back then that electricity and energy transmission was not what I thought it was. As a non expert but interested person I say bravo! 👏
Yep. Everyone who's seen this happen would have got it by the first video. Energy is transmitted through the field, wires are just really effective in setting it up. Doesn't mean you can't get electricity outside of material wire connection.
I am an engineer and an electrician, so I know It is a nonsense con artist Video. . . . Sorry, but that is what it is.. . . At DC, all the power pushed by the Battery Voltage, moving Electrons INSIDE the copper wire to light the bulb. . . Nothing to do with any fields outside the wire, that is just a con.
@@hughleyton693 Really! Damn I thought that was real.. oh well
@@vinamraparashar7590 I recently gave up on using a 555 timer for something I want to do in my car (a toggle switch for remote engine start). That thing keeps turning off from the spark plug discharges. Completely shielding and grounding the shield didn't help either. It was one of those weirdness cases when I just don't feel like I want to keep going with it, because it's clearly way more complicated than I wanted it to be.
Hi, . I am an engineer and an electrician, and I work in DC and AC and Radio and I do know the scientific principles. . . At DC the Current does flow INSIDE the wire and nothing to do with any external fields, Veritasium has that very wrong.. . i do know the science.
Been following this channel must be 10 years now. Always quality content, and Derek is such a likable and smart guy. Greetings from Norway!
exept the autonomous cars video, i agree
@@scooterelway9191 The main message is a 100% quality content though. People are awful compared to autonomous cars and kill a lot more people than those cars wouldn.
@@johnhill160 Yeah I could imagine if more than half of the cars were autonomous then practically all the accidents would be caused by real drivers jacking up the system. Cars with interconnected 5G could react so much faster than a human could
Hello fellow Norwegian!
@@johnhill160 no, the autonomous car video was an ad, it wasnt a normal video, it was propaganda at best, otherwise i love this channel but you can't just brush off valid criticism.
I really like the point that we sometimes take simplified models (such as Ohm's law) for granted and forget that they are just useful simplifications, just like Newton's law of gravity. I also greatly respect this and the preceding video for not just highlighting this in the electric circuits but helping develop a deeper understanding (with great visuals) of what is happening in circuits. Despite being complex, if we do not take for granted our simplified models and aim to appreciate the underlying mechanics we will develop a better intuition for how electricity works at macroscopic levels. This results in us being more successful in solving and designing problems related to electric circuits. Thanks Derek.
This is science at work! People presenting theories, explanation of equations, and ending with an experiment. Great content.
I love that the explainer for this is three times longer than the original video. But it seems that you've taken the lesson to heart and go into a lot more detail in your videos now
I love it when the science YT community disagrees. All participants try to come up with well-founded arguments and each can help progress understanding in a different way because they all have their own approach. Even if they are wrong, which inevitable some of them are, the error helps comprehension.
Agree. That is why we should always have the freedom to express ourselves in any field. Humankind expands from freedom of such.
You know who else wanted the freedom to understand things? Hitler. Very problematic.
@@koalabandit9166 You know who else wants the freedom to understamd things. Litterally everyone. Its a human feeling. Saying its problematic is like saying hunger is problimatic.
You know who else likes to eat food. Hitler. Very problimatic.
@@failingeverything5793 You should change the "Failing" in your username to "Missing".
That's what science is all about!
I want you to know I’m in my mid 30’s and I had a science teacher in 6th grade tell us how the electrons actually didn’t travel along the wires because it would take this immense amount of time and Try to explain it a little bit just as an aside and I’ve held that memory about electrons not traveling the wires but had no idea how it actually worked all the way until now.
This was incredibly edifying and I’m so glad channels and people like you guys exist to help others understand cool scientific concepts that i would otherwise never encounter in my life. 👍👍
The fact that your teacher actually admitted to that is appreciable and is probably a testament to their knowledge as well. Good stuff.
I'm not so sure the explanations are truly so different but it's definitely a way better visual teaching. The same 'caveat' seems to exist where this more than negligible current is lighting the load in a closed circuit solely based on how fast the electric field radiated from the power source reaches the load conductor, but the actual current flow and applied voltage is not seen by the load until after the light speed delay more or less. I don't think he can say the field is whats providing the current because the electron flow is still doing that. The EMF is made by the electric and magnetic fields but the electric current is charge carriers moving in the conductor. For example, the battery itself is not putting out an electric field which has some strength where you can simply place it near the bulb and get it to draw that negligible power. The closed magnetic and electric circuit is what creates these fields that move the charge carriers in the flow. If you introduce a moving external magnetic or electric field to light the bulb you are still directing the electric current in the conductor. The 'field is supplying the energy' in that case because the source is external but it's all magnetic or electric closed loops in a circuit one way or another. The critiques of some engineers seem to be details such as comparing wireless transfer with some form of conveyance of energy that doesn't involve the closed circuit conductors.
Basically it seems like he is trying to make a valid point here but it seems based around the concept of saying something is happening at a faster than light speed interaction when that is not the case. We are using a light speed interaction to account for things like particles and fields when they move or propagate along a distance of conductor. If he is using a Faraday complaint simulation then he is showing what is basically induction and this field propagation which is simply not having to moving along a conductive waveguide that takes it on a detour. I want to know what happens in this experiment or simulation when this propagating field from the source is not reaching the load fast enough.
but at 9:57 electrons *are* shown traveling along the wires...
@@MrPootzen yeah, they do travel, although they do it very slowly.
They are explained as not traveling "all the way down' the wires to be exact, sometimes, to illustrate that it's the electrons present in the conductor which are first seeing the load. This is sort of self illustrated with the slow drift speed and understanding that your common bedroom light will see voltage after you turn the switch on at approx light speed, so it can't be some electron slowly moving from the source all the way to the load in order for that to happen.
It's so heartening to see everyone work on the same problem and arrive at the same conclusion through all these different ways. Makes me hopeful for the future!
This is literally the thought of a 19th century inhabitant :( The world is a lot bleaker than you imagine.
Hey, do you use python-telegram-bot ?
After a few months, another contradicting "scientific fact" will emerge
@@adenosinetp10 why yes I do, also one of the devs for it
@@hoppingturtles Haha ok, I just wanted to make sure it was really you.
Going into more depth really helps! It's interesting how everything is linked, em fields, current, emf, frequency, transmission lines, capacitive, inductive and mutual coupling, Fourier analysis...
This is what science is about: getting the word out there and...collaborate!
Great job Derek, and great job to everyone who gave even a small contribution! You guys are awesome!!
Precisely
science is about intentionally misleading people for views and then making another video lying about it?
Can you debunk this? 👉The Connections (2021) [short documentary] 💖
I remember in highschool, My teacher said that the diagram of flowing electons is just for illustration, and makes things easier to work with in a practical sense and but don't actually carry the energy. and it is physically not how it works. I have never forgotten that. So these interactions are much less surprising to me. But I love the actual breakdowns. I also love that you revisit, and are also not afraid to admit you're wrong when you are. great stuff
You need a class in advanced electrodynamics to understand it
What a cool teacher!
I second this, my late physics teacher gave us the same lecture in our early school days.
"This is just an illustration to help you think about how it works in simpler way, but the actual model is more complex and not necessary to bring up as we can accomplish the same end results with the simpler explanations."
So glad to see that how great minds think in similar way.
@@shkhamd Mine worded it as, All math models are wrong. Some math models are useful.
Fields is why conducting electricity in the nano-scale makes it a headache. EMF noise, crosstalk and even quantum fluctuations make it a challenge to keep the Moore's Law.
I didn't fully understand how the fields and the Maxwell equations worked until you explained this very intrinsic matter everyone assumed was simpler. Thank you and keep the awesome work!
Now we need a video explaining what a field is! How can the field carry the energy? Even in empty space? What is carrying the energy? Because a "field" is just a mathematical representation... The field itself doesn't exist, so maybe that could be an even more impressive video by Derek!
@@-_Nuke_- Dude. Now I have to know those answers too. How the heck does that work?
@@viligante8 its wave like light spectrum but in electro magnetic, the stronger the electromagnetic wave the more it carry energy, thats why they use coil in wireless charging to multiply that effect, cmiiw
@@NotUwU-_- It doesn't need to be a wave. Waves can propagate through it, but that's not the same thing.
@@viligante8 I have no idea my friend!
Came across as a top notch, both as a presenter and as a good & well meaning human being. Has show both humility & willingness to re-present without any ego. Which make one real top notch. Kudos.
Please do more of this kind of thing. This one, the back and forth on the down wind faster that the wind saga, ElectroBoom and Steve Mould's 'spat' over the Mould effect... all of those are like the greatest things I've seen on RUclips
Agreed!
Adding the capacitors in just made everything click for me! Great job in explaining everything and bridging the gap between E&M physics/Maxwell's equations and standard EE circuit models!!
Yep, the way to think of the parallel conductors is as two plates of a capacitor, with the connection of each end being irrelevant initially.
Yeah, that's exactly where it clicked for me too.
Disconnected wires working despite not being part of the physical circuit is mindblowing... until I remembered radios exist
Understated comment!
Electromagnetic radiation is wild
@@bdL91 Ye, it's lit
they turn into. very small capacitors, so the effect lasts a small fraction of a second until it is charged.
I almost convinced by this video but ...... model the circuit in HFSS transient simulation should reveal similar result. It is just EM wave propagation together with circuit.
Your comment just gave me closure.
This was most fun series! Really need more of this kind of open-ended debats.
This is why I love physics. Often we give a simple explanation to phenomena happening around us. But the actual correct explanation is quite complex and quite intriguing.
Kinda like evolution? I’ve always felt like this was a simple explanation of adaptation but hardly satisfying for the origins of all life.
@@stuartsloan Well, Darwinian evolution (as the name suggests) only explains how populations of living things change over time. You can only rewind it up to the first living organism and no further. This is because its "pre-life" ancestors violate the base assumptions that evolution is based on.
It's a phase transition. Something similar happens when you cool a gas. We have theories that describe how gas behaves when you cool it down, but they break when you reach the boiling point and the gas starts transitioning to a liquid (which does not obey laws of gasses).
i agree
There's guy in my unacademy class with ur name
The plural isn't phenomenons it's phenomenas.
Going on this journey and seeing the response videos in a “real time” debate or conversation is exactly what I the internet SHOULD be! Thanks to everyone who made that happen! From the educators to the audience that bumped those videos up the algorithm. It was exciting to see and I learned something along the way.
I am so glad I could come along on this journey. The minds that got into this was wonderful.
to be honest. .. I am so lost with this topic.
But yeah the way we were able to see the real time debate felt so ... pure.
just how the internet should be.
its amazing !!
I love the fact the first video stimulated such a conversation with many other YT creators I follow, ie Dave and BigClive , I congratulate Veritasium for tackling and then reviewing the evidence he presents, this is that Science is, is it not?
Yes it is
agree, it's precisely what science is about...the scientific method at its best...experiment, verify, adjust, etc, etc...that's how we learn. So glad other people took the time to question and experiment themselves. Hopefully some new discoveries come along the way too
it was merely a trick question and wasted everyones time.
Just watched this again for the second time. Gotta love your positivity. Nice and humble but also genuinely happy about the outcome. Well done.
The inspiring moment is when people are trying to "debunk" you, you're pretty happy, because you see people are engaged with this problem. I think this is one of the core values all teachers must have. A teacher does need to be right, but the priority should always be on engagement rather than correctness.
Hence we have too many religious zelots, all thinking they are right, because their teachers followed your instructions of engaging people rather than be correct.
I rather have my teachers, either be correct or teach me critical thinking about their teachings. Engagement is only a bonus to make it more fun/interesting/memorable, the content is way more important.
@@rb3872 I guess what I was trying to say is that, at least while trying to teach physics, you'll get most of the answers written somewhere in some book. So the importance should be given in how to connect with the facts rather than parroting information.
I used engagement in the sense that you think about the facts from your own perspective. And I would go so far to say that the teachers should sometimes make mistakes intentionally so that the student tries to correct him! Because, to do that the student needs to really understand the material!!
I don't know, I was mostly just confused by the first video. I know a decent amount about electricity. But I still didn't really understand what he was talking about when I watched the first one. I watched electrobooms video response to it and it finally made sense what he was talking about. I don't know, maybe I wasn't paying enough attention the first time watching it but if you read the comments on the video there are many people who are confused by it. I will say the way he explained how the electricity actually travels down the wire was interesting. But the original question he asks I didn't like for the same reason electroboom explains which is that it's technically correct but in the real world it just doesn't apply because the amount of "electricity" reaching the bulb is super miniscule. I think he does do a better job of explaining it in this video.
@@rb3872true dat
So who do you think is correct now?
This is how science works. Someone gives a theory others challenge that theory and finally we get a finished product which is nearer to the truth than before. There is no place for ego in science. I loved how this whole current through circuit dilemma is making us more knowledgeable as a whole. Thanks a lot Derek and specially everyone else who asked questions about Derek's original video. Science for the win!!
"There is no place for ego in science." -- So true.
Crucial 👉The Connections (2021) [short documentary] 💖
Can you debunk this? 👉The Connections (2021) [short documentary] 💖
That’s what’s so great about the scientific method. Questions from other peers are sooo valuable! Good for Veritasium for both videos and the entire community for taking on the challenge :)
This has nothing to do with scientific method. There were some gaps in the explanation and the scientific and engineering literature already has some pretty confusing terminology which created confusion. All of the noise only happened because it's Veritasium. If any other lesser known channels would have made similar mistakes, nobody would've cared. So it's ultimately about popularity on internet.
@@randomuser5237 That's pretty accurate for the scientific method as well, if you're a big name a journal is going to be more likely to actually send your paper for review instead of just outright rejecting it. But also part of the review process is in how you explain your findings, not just in how you design your experiments or interpret those findings.
This is what’s great about pure science- experts coming together and debate, call each other out and debate more and then eventually someone may take a question away and refine our knowledge or model and better educate the rest of us.
I really when RUclipsrs of Science contest each others opinions. Each one explains their side in a very detailed and intelligent manner. There's no drama, just information of proving/disproving one's statement. Please continue making these "colabs". It allows me to keep an open mind and learn in the process.
This is what is called civil discourse I think. Two parties discuss their claims appropriately, and professionally. That civility is uncommon as hell glad to see it for the first time publicly. Feels like my whole life people have been bickering & yelling at each other. Online, Politics, etc. We also get smarter through all this discussion as well!
You should watch the video where he bet $10,000 to prove he's right.
@@royalarmy1837 I think I watched one with 2 other RUclipsrs for 10,000 pennies regarding balled chain. That was also great.
Electricity never made sense to me, and it always bugged me that I can't make it click in my mind (fumbling about with equations is easy enough in physics classes, but that is no understanding). These illustrations and explanations are absolutely brilliant, thank you!
then throw in wave particle duality and everything goes out the window.
Exactly! Well said
@@pluto8404 That depends on which interpretation of QM one adheres to. Some state there is no strict duality, like pilot wave. Copenhagen doesn't say it's real (or at least the wavefunction itself).
I watched this video and it still doesn't make sense to me lol.
No one understands it completely.. even the biggest scientists.. the math and science only estimate the net effects.
I loved seeing the detailed and animated simulations. That's not something your average person can put together, so thank you for making this great video!
Chill out, what ya yellin' for? Lay back, it's all been done before. And if you could only let it be, you will see that I am the funniest YouT*ber of all time. Admit it, my dear follow*r 3m
Fax
This is much better than the first video. Thank you for re-visiting this Derek!
Normal person question: Doesn't this mean all lightbulbs in the close vicinity would get turned on regardless of being connected to the wire?
That would have been a great demonstration: surround the switch with non-connected bulbs and show how they light up for a split second until the fields realign around the wires.
Maybe collab with one of the youtubers that make those "1 million FPS" videos :)
Yes you can turn on an LED by being close enough to a transmission line. Please don't try this yourself lol.
have you heard about radios
Even a million FPS would be an entire microsecond, which is 400 times longer than the light would shine. You couldnt see it.
If you use AC rather than DC, so that the electric field is always changing, then the effect on the non-connected load is continuous rather than transient. If you do a RUclips search for fluorescent tube light under power lines you will see plenty of examples of this phenomenon.
@@robinpayne125 you'd also have to be very careful about what light you use. You couldn't really use a household light, but you could devise a device like a joule thief to amplify that for a small LED. This goes without saying but you can't power something like an incandescent bulb or even a household LED via stray capacitance alone.
I love how thorough you are with you're explanations, giving multiple examples to ensure comprehension. Because of that I've able been to learn and understand things that were never fully explained or at least articulated in a fashion for me to fully comprehend it while in school settings. While I did learn a lot of the basic fundamentals of electrical engineering for diagnosis in the automotive industry it never went quite this far in depth but my curiosity was always there and I appreciate the time/effort you go to for us to learn this stuff!
As yet another EE (who didn't do as well in my electromagnetic fields courses as I would have liked...), I am very pleased to see this entire effort, from the initial video, to all the response videos, to this follow-up video. Fantastic work by all involved! Bravo!
Same
I think this also helps understand why ground planes are needed in semiconductors, why high frequency circuits and very difficult, and why there is still some black magic needed to get many circuits to behave how you expect.
Haha yep @21:30
Crucial 👉The Connections (2021) [short documentary] 💖
this came out when I was first semester of EE, I come back every year and understand it better. it is truly the best "How electricity works" video.
As an electrical engineer in college , this video clears up so much about electricity. Amazing work Derek!⚡
So fortunate! I was just thinking I wish I had the field model vs pushing-electron model sorted when I was taking those classes.
For example, when trying to make sense of induction, just understanding that the field theory underpins both phenomena would have made this concept so much less unsettling.
Derek is like Russia right now, he fought all those "internet scientist NATO" alone, where they keep telling him and also the entire internet world that Derek is wrong, but Derek persists that they don't understand what he's trying to do
Did you hit your head bro?!
@@electronresonator8882 russia isnt gonna give you money for defending their war atrocities bro
Science RUclips is pretty awesome, seeing all these RUclipsrs coming together around a certain theory, concept, etc, and producing so much awesome content for us, and pushing each other to be bigger and better.
Almost like dissing in rap
The Science Asylum guy did a simplified version of this a while back, using vectors. Nice to see mainstream creators go in depth with certain topics.
Yeah, Veritasium linked to it in the description of the original video.
can now someone explain workings of battery if charges dont move ???
can you give us some link to it ?
@@Best-um3eq what charge doesn't move? the electrons still move.
@@thastayapongsak4422 but video shows they vibrates
9:23 😭 if only I had teachers like you when I was studying all this shtt 💔😭