Richard Feynman Electricity
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- Опубликовано: 14 апр 2009
- Richard Phillips Feynman was an American physicist known for the path integral formulation of quantum mechanics, the theory of quantum electrodynamics and the physics of the super fluidity of super cooled liquid helium, as well as work in particle physics (he proposed the Parton model). For his contributions to the development of quantum electrodynamics, Feynman was a joint recipient of the Nobel Prize in Physics in 1965, together with Julian Schwinger and Sin-Itiro Tomonaga. Feynman developed a widely used pictorial representation scheme for the mathematical expressions governing the behavior of subatomic particles, which later became known as Feynman diagrams. During his lifetime and after his death, Feynman became one of the most publicly known scientists in the world.
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Khan academy brought me here.
Me too!
Me too!!!
Me too ♥️
Me too
Same
I really like the way he speaks, it's like a melody.
Cee Four Tee Seeing the joy flowing out of Feynman helps the same flow out of you and me.
I know this is old but I hope some still read this:
When I was in HS my counselor introduced me to Feynman. He’s a great storyteller. There are books, art, him telling stories on tape, he loved bongos and lockpicking. Just awesome all over
Feynman wasn't afraid to talk about the mystery behind the nature of nature and how little of it we really understand. This was decades ago, but it feels as if he's talking to us today (but from the moon).
I wanna call him up. What's his phone number?
When Feynman was talking about the force of electricity being greater than the force of gravity he was trying to explain the difference in scale (e.g. a number with 38 or 40 zeros behind it). I heard another person try to explain the difference in scale in this way. _Basically the electrons on that comb are able to over power the force of gravity generated by the _*_entire planet_*_ ._
@@nietzschesghost8529 i just felt an admiration for you sir 👍😛🙏
Given two particles the same distance away, mass 1kg and charge 1C each. The electrical interaction will be ~10^40 greater than the gravitational one. This difference is caused by the different constants in coulomb's law and newton's law. 1/4pi*ɛ is much much greater than G the universal gravitational constant.
That's a bit misleading, since the charges on the comb are much much closer than the center of mass of the planet.
@@creillyucla It's not about the planet's gravitational pull, it's about the atoms'.
Prof. Shankar is the other person you are referring to?
Wow. The moment he started talking about static electricity over a distance and how touch is limited in range because it's just more neutral, everything clicked. Not one person has helped me make that connection between everything on a large scale until now, and I'm halfway through a physics degree D: I need to read more of his stuff... It takes a true genius to explain complicated things in the simplest terms, and he was definitely one of them.
Nice that he mentioned Maxwell . A man who should be mentioned along with Newton Einstein & Feynman .
Long live Dirac
That is bullshit what you are saying...maxwell was nothing equal to to Einstein or newton...He just combined the equations given by different scientist with some modifications
Maxwell and Faraday should always be mentioned together. Like protons and electrons, they attracted to make some of the most historic and fascinating discoveries. And to describe what they saw in terms of math is truly a gift Maxwell gave to future generations.
@@abdullahahmad2474 *_that no one else managed to solve_*
That's like saying Einstein was nothing special because the theory of general and special relativity was staring everyone in the face. If you actually think about it it's painfully obvious, except it took a 20-something year old patent clerk to point it out.
Bro, NEWTON and EINSTEIN are gods
NO ONE can be compared to them.
Feynman, maxwell, faraday, dirac, bohr
are very very great scientists
But NEWTON and EINSTEIN are wayyyy greater than the term great
You can tell he truly loves physics by the smile he had throughout the explanation!
He seems like a wonderful, insightful gentleman. We were lucky to have him. 🙏
Don't underestimate how difficult it is to just sit and speak continuously about physics without misspeaking from time to time. This is an unimaginably brilliant man. He's not confused..he just has trouble translating sometimes. He meant motions within the copper wires. The potential field is what initially drives the electrons. The magnetic field is just a relativistic effect of the moving charges, but what he is saying is right too.(aside from the initial wording)
Finally!! A quality production with no annoying, distracting background music! Thank you for this.
Excellent, excellent, excellent! He really thought these things through!
It's only coppah!
Brooklyn ;)
Fugetaboutit! It's just coppah.
Thanks for this! Feynman is so special to be able to explain and help us understand without endless math!
I read his book Surely You're Joking Mr Feynman when I was 13 and I absolutely loved it. I still marvel at the wonderful GENIUS this man was!
How awesome would it be if Feynman was alive to make videos with Brady??
yeah
he would love it the most i suppose
feynman i mean
Who is Brady?
Binu Jasim Brady Haran
Kahn Academy brought me here … what great analogies!
The perfect combination of entertaining and brilliant!
Every time I listen to Feynman I discover something new. What a jewel of a man. Just to think he is still alive making our days thanks to electricity having been invented !
Invented not, discovered !
Agreed...I've only just discovered these youtube videos. What a priceless set of vids!
I will never look at my e-cig the same way again.
Can't believe this interview happened on 1983.
exams and research brought me here and as a college student who "hates" physics I must say this man is the only dude that made physics look so interesting or fun to me(I actually sat and smiled through the whole video thinking about electrons around me).
I love listening to him although I'm gonna be honest I don't understand everything. listening to him talk about all of this complicated stuff about electricity made me think about how amazing it is that humans have made a way for me to sit here and watch and listen to this interview of feynman from many years ago. Imagine all the complicated shit involved in making my headset make the sounds and the screen make the picture etc etc, dang the world is a mysterious place.
at your heart your a physicist..go to school, learn more, even if its hard...i did, you can also!!❤
I now have a lot more to think about when I next see my dentist. Thanks for this, nebulajr!
Feynman had an incredible intellect and was such an eloquent, patient and understanding person.
Can't help but wonder how he would get on in a bare knuckle fight with Carl Sagan though. I guess we'll never know now.
He's like a strange mix of Jack Nicholson, Robert De Niro and Harry Shearer. Love it!
So true. I love you ❤️ man. Jack Nicholson I could see it but idk why no one agreed.
Love his new yorker accent.. coppah.. jiggling the coppah
re: electricity
competent mastery over short distances we have attained
longer distances linked to ideas like 'spooky action at a distance', 'entanglement', etc. are currently being addressed ...
... by everybody wishing to win a noble NOBEL prize
One of my (un)fortunate habits is picturing of the most random, minute, but relevant details of common experiences and just following the chain of causality and seeing how far down the rabbit hole it takes me. I wonder what that person who pushed the button that started the process that deposited the coating on the hard drive platter that this video was originally transferred to had for dinner the night before... I wonder if I would ever had seen this video if he had raging diarrhea... Oh, the thoughts that keep me up at night...
It's his enthusiam and wonder that he conveys.....That's what's missing in a lot of science teachers....you can't put a price education at this impact level.........This is what science teachers should studying.....
How peculiar life is. The other day I picked a book up from my local charity shop.This book was a biography of James Clerk Maxwell. 'The Man Who Changed Everything'. I have an interest in the physical sciences, but only as a hobby, and here I am, after watching the BBC drama about Richard Feynman and he also mentions Maxwell. Now I know that that isn't anything unexpected but I just the love how little nuggets of 'coincidence' come along every once in a while.
Great vid man keep up the great work!
If only Feynman had met what the internet is today
I believe Dr. Feynman would be in his element with today's internet. He was very good at programming computers to help him solve difficult problems.
I just discovered this guy about 40 minutes ago. It is sad to learn he has passed on. I will watch all his videos. I've read and heard so many ways of explaining things that I've never been able to understand, but when I hear him speak, I don't even have to try to understand him, it just makes sense. I want everyone in the world to watch his videos. I feel like they should show this stuff in school or parents should share it with their kids.
just wait till you try to understand him explaining quantum-electro-dynamics. Even the power of Feynman to explain things easily starts to break down with QED and general relativity.
I think he's the greatest man who ever lived. Maybe if there were videos of Newton, or Einstein, I'd think differently, but honestly I've never seen someone so brilliant and so engaged and so... philosophically tuned to everything he's ever looked at. Dr. Feynman, I salute you, now and always.
It would be so great if people could translate this in a video for my kids in the 9th grade learn with one of the masters of physics what is electricity.
Maravilous!!
Well sir, I am currently studying this all in 9th grade only.
Ive been listening to him for days
seems like the top comment is whoever can sit and listen to him the longest, so i can sit and listen to him for YEARS!
he just loved it all so much
Idk why the way Feynman talks reminds me of Bruce lee , or Bruce lee reminds me of Feynman , the way they talk , the passion spills out of their eyes , the eyes light up . The confidence, idk what it is but these two gentlemen of complete different disciplines light up something inside of me when they talk .
Interesting video
He was a great man!
Well said. :)
If I had a possibility to live only a day with anyone ever being alive that would be R.P. Feynman.
At school I never "got" science, and then I read a book by Richard Feynman and I finally "got" science - for that he will forever be one of my heroes
I love the way he's enjoying what he is saying about!
We love Feynman!
I just watched this muted with The Beatles - Tomorrow Never Knows - playing in the background. I think there's a Lennon-Feyman jiggling strings connection.
Ricky's very keen on jiggling.
The universe seems to be keen on jiggling.
enlightening...
I remember being a kid and brushing my hand through my stuffed animal's hair and suddenly blue sparks started coming off it. The more I brushed the more sparks/light was coming off. It seemed miraculous to me. I realised it was the same static I could feel on my fingers during the day, but that now it was visible in the dark.
Give it a try :)
This fella is comprised 🎯💯
I love this guy
Is this the continuation(word?) to the video called "Richard Feynman Magnets" by the same uploader?
awesome
awesomeeee
Great
Richard is like Bob Ross in physics just slowly and beautifully explains something so you can picture it vividly 😆
7:00 sounds a lot like relationships - the bigger the differential the more mysterious the force becomes. in liquids it's temperature differentials and bose-einstein condensates. Super fluids. Science is so cool.
@jno1686 I remember learning physics in school and electronics in college. Not all the teachers were good @ explaining what they knew but the ones that did know did a very good job. I only made the comment to point out that we now have more scientist then ever but they still have problems explaining theories. Then along come the politicians to explain climates science but with political solutions to problems that science could solve if it was allowed to. Hope you get my drift.
Me too!
Can someone explain the part where he says 'you only need copper'? The knotting and un-knotting part?
He is probably referring to a self-excited generator, which makes its own magnetic field. Practical versions of those machines do require iron yokes, though. He is correct that one could make a self-excited machine just from a conducting metal like copper, but it would probably require an impractically high frequency of rotation to be efficient, if it could be made efficient, at all. He was not an engineer, so to him the theoretical possibility was exciting enough, he didn't have to calculate a feasible design to have fun with the idea. Having said that, he surely could have, had he wanted to.
He should be the face of all learning starting at K to 99!
Kahn Academy brought me here too.
he put such passion into it this guy's an artist he explains it poetically Tuesday March 26th 3:39 in the morning listening to a great explanation
Omg I think I just started to understand physics.
With a teacher like him, even a dummy like me can learn quantum mechanics. This man is god to me.
From stars we came, to stars we shall return.
Just wondering; how much could the drift of an electron be, in terms of, like, meters per second when subjected under, say 1 volt of electric potential?
The election would be accelerated by the potential difference oim the same way as an apple would be accelerated downwards by gravity if released from a height.
The kinetic energy gained by the charged election would be 1ev which I think is 1.6x 10to the power of 19 joules
If you look up the mass of an election, you can use KE =1/2 X m xv squared to find the final velocity of the election
That's in free space.Within a copper wire,
Use the equation I=nqv I think.look it up
1 ev =1.6 X 10 ^ -19j
Richard Feynman is to science, what Clint Eastwood is to Hollywood 😂
The best way I can explain this to you is to imagine the mechanical system as a logarithmic decaying curve in where at small values of X, which we will call distance, the efficiency, Y, will be higher than using electricity. Examples are your car. However, AC electricity, which we will imagine as an exponential curve, will over take the logarithmic curve at large values of distance X, which means its efficiency is much better. Continued.......
surprised he didn't mention Paulis exclusion as an explanation of why your finger pushes things.
Carlos Silva Likes repelling likes is simple and accurate enough. We can all experience, understand or at least accept it. Exclusion principle, even though it may be more fundamental, is, as F said, not understood by (m)any!
One remarkable thing about Feynman is that he was always right.
What are the reasons for the electrons and protons not collapsing? Feynman attributes it to a in Quantum Mechanics, anyone with a good explanation?
Thanks,
+sathya narayana Conservation of angular momentum, what stops them from flying away is a deeper question,
don't get an attitude if someone who's put their life into a subject won't entertain you with a answer to question you happen to have
unless their your teacher and its about the subject your studying, then demand it!
+sathya narayana In the quantum world, don't treat particles as points in space. They are rather described by probabilities of being at some point of space than exact locations. So we can't say that an electron really flyes in a circle, we can rather say that most of its time it stays inside some region of space which can be called its orbit. The functions that describe the probabilities of an electron to be somewhere satisfy some equations. But I don't know where these equations come from, sorry.
Wave-particle duality
it depends on the economy right?
This blew my fucking mind!
same here :)
Feynman’s favourite word is “Jiggle”
IF positives and negatives are imbalanced on a matter due to some cause and fails to cancel out each other, I assume the matter becomes polarized and eventually hazardous radioactive?
professorfidelcat No, not at all. An imbalance of charge does not make something radioactive.
He sounds like my brain when: letting me know anything .when ,I wonder.
Is dark energy the same force?? Sorry if I sound stupid. Just being curious.
James Sarginson No.
No one knows what Dark Energy is. It is just a label for "whatever is causing the universe to accelerate in its expansion" (which has yet to be answered by science).
Great guy, i wonder what his thoughts were about consciousness..
What did he study?Thank you.
Mister Slovenia physics. He contributed a great deal to particle physics specifically
and Edison and Tesla come along a little bit later with a grasp of maxwell's work and invent absolutely life-changing inventions!
This reminds me of my grandfather..
Eh? Kese?
Feynman was the greatest of all time. Period. ^v^ listening to Feynman is like consolidating the intelligence of the greatest minds in human history. He’s Probably more intelligent than an alien race which may or may not be out there ;)
How much dumbed down should it be?
Did dentists use electric drills back then? Because the modern air one was created in 1868... Methinks Mr feynman was on a flight of fancy here, and was mistaken... But his meanderings about things are always awesome, even if what kicked whatever one of them off was maybe not quite right.
Even the pneumatic drills ultimately run on electricity.
BOOM! Well there goes my mind.
My engineering prof suggested that if the Mechanical engineers had been a little faster we would have had line shafts running down from the Dam instead of wires and gear reductions instead of transformers. This is what we call an analog.
Then there is a hydraulic analog with pumps and motors. Fluid?
No sound :'(
Khan Academy?
7:23 PM
1/20/2019
What he is doing at the beginning is defamiliarisation,we look at things everyday and take them for granted but if we take a closer look at the processes of nature everything seems the more amazing!
WHY DOES MANSON LIVE AND GANDOLFINI AND FEYNMAN DIE .?
Long Pieces Of Coppa...
Feynman is from BROOKLYN, NY!!!
BOSS
2:14
He makes such sweet faces. Reminds me of a kid in a candy store!
And it would be so inefficient too. Nothing beats electricity in efficiency at long distances. That is a fact.
Me three!
Thank you Khan academy..🤝
@MicrosoftsourceCode He's intensely simplifying it. The majority of what he is saying is metaphor and simplification.
Or are you trolling?
Me three!!!!!!!!
Anyone here from the khan academy page?
🙋♂️
Yeah, the top comment for example.