That ship the Great Eastern was a big deal because it was the only ship big enough to do the job. As it turns out, a cable long enough to cross the ocean is quite a lot of cargo all in one place.
Cable laying also was what saved the Great Eastern from being an epic fail. It was designed as a passenger liner for 4000 people and with great range, but never turned a profit in this role.
I love your videos very much. But with respect to magnetism, how is it even possible NOT to mention James Clark Maxwell? Almost everything we do as EEs use his equations to predict, model, and improve our designs. He was one of the most influential people in EE of all time. Without his work, we would likely still be living with 1800s technology as our mainstay. His (and Lenz, et al.) equations are what made telegraph, radio, microwave (the magnetron likely would have been years later if not for Maxwell (i.e., cold lunch)), television (let alone a modern day computer with a CPU containing BILLIONS of transistors), and just about every thing else possible to conceive through the mathematical modeling of magnetism. As an example, just look at how much trouble we would be in if PCB layout was done based solely upon autoroute. Nothing with frequencies even near the 1Ghz range would ever work (no PCs, no cell phones, etc.). J.C. Maxwell saves the day! He was able to make the mathematical correlation of so many different disciplines of physics, and quantize the charge carrier (because everything is somehow connected in the end! (Isaac Newton actually said that)) between Gauss, Lenz, Faraday, Ampere, and so many others. His work tied all of this together. His equations not only provide for EE, they are used in quantum mechanics, as well as in orbital mechanics. Maxwell's equations are in play at CERN every day. Not just this, but even light! He explains that even light is a magnetic wave, and makes assignments for the medical field of optometry. This man was nothing short of a genius, and his legacy must be celebrated! Thanks for making these videos!
I think the main reason for this is likely that they were scientists, not engineers. Science and engineering are both closely intertwined, but the show seems to want to focus on the people who used the knowledge obtained by scientists, to actually build things. Maxwell determined equations for how electricity worked, but I don't know if he actually built anything with that, or developed new devices. That said, they have touched on more scientists as well, I think its also just a lot of people related to the field. Can't cover everything, and they'll probably touch on Maxwell when they get to his equations.
Maxwell was a theorists, not an engineer or a practical scientific. Many of his formulas where already known (Gauss,Lorentz...) and his main works are mainly modelling Faraday’s experiments. Maxwell himself referred to his field pictures and descriptions as The Book. Nonetheless his legacy is invaluable, but because he accelerated the development and related light to em, but really he didn’t invented anything 🤷🏻♂️
David Lenir Invented? No. Discovered? Yeah. Sure. And ELECTROMAGNETIC WAVES dude! That’s hardcore! You can’t invent something that happens in nature. All the time. But he is the archetype of a theorist scientist, as he did all his models in his house in Scotland, barely ever visiting a laboratory. He’s awesome, but he belongs to a History of Science episode, not to a Engineering episode. I wonder when he will appear in the HS CC
This was a beautifully arranged informational video that gave me insight to knowing that the history of any topic can ignite and fuel a deeper love and understanding for any topic.
It looks like telecommunications had a really rich history, since most of the video is talking about it. By the way, I study power Engineering in Syria, And I would be really happy to help translating the videos of(Crash Course Engineering) into Arabic.
This was such a detailed, interesting and an amazing video. I really enjoyed the video and I grasped a lot of information too. Keep up the amazing work!
I used to remember elementary and throughout my middle school time, even up to my time highschool time, Thomas Edison was painted as a genuine person who fought to develop his idea against the manipulative nikola Tesla. Not even kidding, they made us watch an animation about his life and it showed my Tesla as the villain. Kind of interesting up until 3 years ago I heard otherwise, and the tables turned.
For some reason people find it hard to listen to a story that doesn't have cartoon caricature. In real life, both were brilliant inventors. At the time, Tesla didn't get the recognition he deserved, so media portrayed him as the "bad guy". But now that Tesla is better known, people portray Edison as the villain, going so far as to claim he stole inventions from the people he paid to work for him. Improving on previous inventions (the light bulb) is not theft. Nor is independently inventing something (phonograph).
To omit the experimental work of Faraday, is mistake. Albeit that Maxwell took Faradays experimental notes and turned them into mathematical theory, from which Maxwell derived approximately 16 equations which were condensed into the 4 famous equations, still used today, by Oliver Heaviside.
Yeah, right, but electricity powers a large part of the world. Flowing water powers some. Wind powers qite a bit. Etc. Bottom lline: the Sun is the only thing that can be said to power "the whole world."
DC is actually better for long distance transmission. Nowadays we consider it worth converting to DC if the line is longer than 700km. The problem is that back then there wasn't a power converter for DC, so you had to generate, transmit and distribute at the same voltage. Transmitting at a low voltage means you have a high current so you lose a lot of power along the way because of the line's resistance. While for AC there was the transformer, so you could generate at around 15kV, transmit at 500kV or more and distribute it to homes at 220V for example. Even today, DC converters at that scale are very expensive (hence the 700km threshold), but they're getting cheaper and more efficient every year, so maybe we'll see DC used more often. Then again, our whole infrastructure is built around AC so it's hard to change.
Power is Voltage*current, so delivering the same amout of power at a larger voltage requires a smaller current. A transformer allows us to do that conversion for AC electricity. It's the same principle as the lever, the hydraulic lift, the gear transmission etc, you trade force for speed. Voltage is the equivalent of force for electricity, the electromotive force that drives the electrons, and current is the equivalent of speed, the rate at which electrons move along the wire. As a matter of fact, before digital computers existed, electronic analog computers were used to simulate various physical phenomena using these analogies. A capacitor is the same as a spring if you use your imagination.
To those who may scroll down here (or have already commented) to say that they missed certain prominent figures or breakthroughs that you may feel should have been mentioned in this video, there are a couple things to consider: 1) This is only the 4th in a series of videos, and at the moment we aren’t quite sure what else may be covered at a later date. 2) It’s also possible that the event or figure was covered in an episode of a different series, as is the case with James Clark Maxwell and his equations being mentioned in their series on physics, in which case it doesn’t make sense to spend too much unnecessary time on it here. 3) As others have said, many of the specific figures people have mentioned aren’t engineers at all, but rather scientists or mathematicians. While it’s still crucial to give due credit to *all* those who helped bring about these advances in engineering, the purpose of this series is to highlight the engineers themselves, as well as their creations. That said, I do love seeing the discussions in the comments about these figures and their contributions to not only these respective fields of engineering, but to engineering and science as a whole. It’s genuinely amazing to see how the influence of many individuals can create these innovations as each person builds on the foundation laid by the last, and especially to see the underlying framework laid out by some of the lesser known, but equally important, contributors.
Its interesting that Edison was given as much credit as he was, considering how much he stole, lied and generally was more of a salesman than actual engineer. Additionally, so much interesting history has been left out, the field of control and automation in electrical engineering has had an absolute insane impact upon the industrial field! Far too early a cutoff even for a crash course. Source: Electrical Engineer :)
jonasn5 I also at least expected a mentioning of Maxwell('s equations). Also control is more multidisciplinary, namely I believe mechanical, chemical and economics all do control. Control also might have more of an origin in mechanical engineering, for example a centrifugal governor. But I doubt that control will be mentioned in the crash course about mechanical or chemical engineering as well. (I myself study control theory and have a mechanical engineering background).
K van der Veen since this is about engineering, I think the idea was to focus more on the teche of electricity, and to put less emphasis on the episteme of electricity.
jonasn5 he was a great technician, thou. He didn’t just stole ideas, but improved on it, and found simple ways of making useful things. Like he improved the lightbulb after trying hundreds of materials, and the gramophone was simple and clever. Also, little known fact, he highly respected Tesla, as he gave one of his laboratories to Nikola when his burned down. I mean, he wasn’t as bad as “Tesla fanboys “ portray him lately. Reality is complicated.
Edison didn't steal anything. People just mistakenly credit him for things he wasn't the first in (but he had independently created). It's a little bit like how people like to attribute everything to Tesla these days. Edison improved massively on previous inventions (not theft). He also paid engineers (like Tesla) to do work for him. This is exactly how research and development works today: Nobody says Elon Musk stole car/rocket technology from his engineers, despite working them to death. Edison made massive advancements in his field and the only reason people bash him is because they think it's the only way to make Tesla look good. Edison' didn't steal the light bulb: he just invented a better one through hard work and perseverance. I'd also like to debunk a common myth: Edison never promised Tesla a large sum of money and then refused to pay it off (Tesla never said this). If I am mistaken, please direct me to any inventions that he legally stole. Preferably with a better source than "Tesla wrote this decades after working with him and Tesla can't be wrong."
24680kong Well, Tesla’s account of the conflict he had with Edison recalls him saying so, and that later Edison said it was a joke. If you don’t think it happened you should explain why Tesla would leave the company to dig holes, and afterwards say that was what happened.
When I went to MIT in the Fall of 1960, one of the frats was in an area of Boston which had DC. I don't remember why, since I was in a dorm, but I got an AC / DC / battery portable radio. Today, I can't imagine finding such a thing.
Actually, though I know the type that you mean, the modern equivalent are quite common. Check out a camping / outdoor supply store for a radio that will run on AC ( with wall adaptor, sometimes sold separately ), DC (USB plug), 2 x AA batteries, and usually have a small built-in rechargeable battery, plus a solar cell built in, too, and sometimes a hand-crank dynamo.
I'll tell you what though, engineering studies are hard. Just had my chemistry exam today which, I have the feeling, I failed and you have then these down moments where you think of just giving up and work directly instead... But I must say crash course does a good job on showing the history behind these studies and their creations since.
I feel you. That's the same in any science field. I failed my chemistry exam on the first try as well and more than one time wanted to just throw my studies into the bin. So, from a biologist to an aspiring engineer then: I wish you the best of luck, perseverance and hope you keep your chin up! ;3
Engineering is like that. It's a path that hurts and may threaten to destroy your spirit but it also shapes your mind and helps u see the world much differently. Keep fighting. You never know how much u can give back once you get the degree.
Architecture itself does not count as engineering, but if you are talking about architectural engineering, it is a mix of structural engineering (a subfield in civil engineering), mechanical engineering and electrical engineering.
Okay episode but so focused on executions and glossing over of the really good stuff. Invention of the battery to electric cars and trolleybuses. Only 10 minutes and it did not do the field justice focusing on the electric chair.
Did you know that there are reversible hydroelectric plants? They can either generate energy by letting water through the generator like a normal plant, or consume energy by turning the generator into a pump to drive water up the reservoir. So they're basically giant batteries. They can be used with solar and wind generation to store the excess power and release it when there isn't enough sunlight and wind to meet the demand.
Believe it or not, as late as the 80s, some EE professors refused to go over transistors since they were "not as stable as vacuum tubes" and were known to burn up
Extream,y well put, but I wanna show those videos to my little niece because I want here to be more interested in my work field so I wish you can include more live examples like having a small transistor in your hand when you talk about it. but in general, you are doing an amazing job.
I've read the Bell System Engineering books - fascinating stuff in there. I've also read theory and operation of the old Crossbar switch gear. That too is fascinating. In essence an electro-mechanical computer. Another fascinating one is the development of the transistor - from point-contact to junction to smaller than the naked eye can see today.
Hi. This fall im going to be a senior in highschool. Im so looking forward to applying to EE. I am pretty good at math and physics. I love what EE deals with but also electricity and magnetism are the ones i find the hardest from optics, EM, thermodynamics and classical mechanics. I think it might be because its something you dont really see? Any advices for me in order to prepare better for when I go to college? Thank you EDIT : Also, I think I find the best suitable for me going into telecommunication side of things
Generally EE - Eletrcial Engineering, ECE Electrical & Computer Engineering EEE - Electrical & Electronics Engineering The title on my degree is EEE but the department changed it's name to ECE the year after. Electrical Engineering is circuits, Electromagnetism, power (e.g. 3 phase), control systems Electronics engineering is diodes, transistors and integrated circuits (ICs) Computer engineering is the physical things that make computers work (start at logic gates and work all the way up to large ICs) with a touch more programming.
If you can get Pre-calculus and Trigonometery in High School, I'd recommend you do it. It's the backbone of all the engineering and physics courses you'll take.
Hero described[12] the construction of the aeolipile (a version of which is known as Hero's engine) which was a rocket-like reaction engine and the first-recorded steam engine (although Vitruvius mentioned the aeolipile in De Architectura some 100 years earlier than Hero). It was created almost two millennia before the industrial revolution. Another engine used air from a closed chamber heated by an altar fire to displace water from a sealed vessel; the water was collected and its weight, pulling on a rope, opened temple doors.[13] Some historians have conflated the two inventions to assert that the aeolipile was capable of useful work.[14] Hero's wind-powered organ (reconstruction) The first vending machine was also one of his constructions; when a coin was introduced via a slot on the top of the machine, a set amount of holy water was dispensed. This was included in his list of inventions in his book Mechanics and Optics. When the coin was deposited, it fell upon a pan attached to a lever. The lever opened up a valve which let some water flow out. The pan continued to tilt with the weight of the coin until it fell off, at which point a counter-weight would snap the lever back up and turn off the valve.[15] A wind-wheel operating an organ, marking the first instance in history of wind powering a machine.[4][5] Hero also invented many mechanisms for the Greek theater, including an entirely mechanical play almost ten minutes in length, powered by a binary-like system of ropes, knots, and simple machines operated by a rotating cylindrical cogwheel. The sound of thunder was produced by the mechanically-timed dropping of metal balls onto a hidden drum. The force pump was widely used in the Roman world, and one application was in a fire-engine. A syringe-like device was described by Hero to control the delivery of air or liquids.[16] In optics, Hero formulated the principle of the shortest path of light: If a ray of light propagates from point A to point B within the same medium, the path-length followed is the shortest possible. It was nearly 1000 years later that Alhacen expanded the principle to both reflection and refraction, and the principle was later stated in this form by Pierre de Fermat in 1662; the most modern form is that the optical path is stationary. A standalone fountain that operates under self-contained hydro-static energy; now called Heron's fountain. A programmable cart that was powered by a falling weight. The "program" consisted of strings wrapped around the drive axle.[17]
What can engineers do that physicists can't? I've just finished my first year of general engineering. I get so specify after my 2nd year. I've got to say that if I specify in anything other than chemical engineering (or maybe civil) then I'll feel like I would've been better off majoring in physics. I've got many reasons for this, one of them being that I love physics. I enjoy mechanics, electricity, fluids, thermodynamics, etc, which is why I chose general engineering. I also really enjoy learning about, for example, how a capacitor works not just its characteristics in a circuit and how it can be used. This was covered in electrical engineering (and in my IB diploma before that), but when we learnt about the inductor for example we skimmed through how it works and mainly focused on its characteristics and implementation in circuits (don't get me wrong I really enjoy that too). Another reason is that I haven't really heard of anything that engineers can do that physicists can't. For example, The Art of Electronics (a great book for anyone studying electrical engineering) was co-authored by a physicist not an electrical engineer. Also, my materials science lecturer actually a physics major who tailored her PhD towards materials science. Not to mention the plethora of things that physicists get to study that engineers don't (dark matter, relativity, quantum mechanics, etc). Its too late for me to switch to physics without repeating a year in uni (thats not something I'm willing to do and I'll probably end up majoring in chem eng anyway), but I still need this question answered "What can engineers do that physicists can't?" I just want to clarify that I absolutely love engineering and that even if I majored in physics I would most likely end up in an engineering-type job aka not really focusing on research. I'm also really leaning towards majoring in chemical engineering so thats good.
In a good engineering school, you'll learn more than physics and math. You'll learn about economics and finance, human resources and project management, because that's a large part of what an engineer does. You'll also learn about the fundamental building blocks of your field. In EE, depending on your sub-specialization, you could learn about FPGAs, microcontrollers and PCB design, or the details of induction motors, transmission lines and circuit breakers. Physicists are concerned with pushing the boundaries of Science, so they wouldn't learn about any of these applications at the university. Of course, in the end these specializations are just a bag of courses that the university thinks are necessary for the work that you'll do once you graduate, but every job is different and the world is changing very fast, so I think they're becoming less and less relevant. For most jobs you'll end up having to study a lot of things by yourself, and you won't need a lot of the things you studied at the university.
Yeah I see what you mean. I do take some of these extra classes and I'll take some more in the year to come. I was initially gonna comment on how they're not a good enough factor to make me choose engineering and not physics, but I changed my mind when I started to list them out. The classes I've took so far covered some of systems engineering basically, how to come up with requirements for a project, how to achieve them, how to check that you've achieved them, also designing for a specific goal like manufacturability or usability, ethics, and report writing (not lab reports, but reports you'd write for an investor or smthg), etc. Ill be taking finance and law classes in my 3rd year hopefully. Considering that I'd prefer working in industry over doing research, these classes (which physicists don't take) are a good reason to major in engineering. Are you a naruto fan by any chance? I assume so because of your username
Well, I was a fan of Naruto when I made this account back in 2006 or 2007. I dropped it eventually (didn't read or watch the end of it nor Boruto) but never bothered to change the username. I think one of the most underrated courses for engineering is quality. One of the schools I went to didn't talk about it at all, and the other had a 16-hour course. But it was a pretty big deal in the first company I worked for, which designs and manufactures lab instruments. Quality gives you so many tools to measure how well projects are going and solve problems along the way, and tells you how to interact with suppliers, employees and customers to find ways to improve products and processes. It is a major on its own, but I think it's very important for an engineer to have some basic notions of it. And yes, you write *so many* reports in engineering. Eventually I started using LaTeX, in part because the source files are more organized and the result looks really good, but also because it kinda feels like programming, so it's less boring than using a WYSIWYG editor like Word.
Can u please do a crash course on An Inspector Calls I am studying it for GCSE and after watching Jane Eyre (which helped ALOT) I would really appreciate you doing a video on it
She should have said: “And you’d be surprised in how much depth is involved in the history of Electrical Engineering. Well, it [might just shock you!]” (Add 2 eighth-note drums, and a crash a beat later)
It is not an argument. Tesla had the patents, Tesla did the pioneering research, Tesla invented radio. End of story. He was quoted as saying "Marconi is a good fellow. Let him continue. He is using seventeen of my patents."
BuddhaBebop you should watch electroboom. He’s a cool electrical engineer. His videos are way more in-depth. This video didn’t do engineering justice. I’m an electrical engineer and I would recommend it if you like math. But when I was in college I almost chose civil engineering. It’s hard to decide.
Not a bad video but I think that it would have been worthwhile to at least touch on industrial automation which has had a huge impact on the modern world.
She’s a great host.
she is indeed
Shini Somara
That ship the Great Eastern was a big deal because it was the only ship big enough to do the job. As it turns out, a cable long enough to cross the ocean is quite a lot of cargo all in one place.
Cable laying also was what saved the Great Eastern from being an epic fail.
It was designed as a passenger liner for 4000 people and with great range, but never turned a profit in this role.
Bird_Dog, make a hell of a troop transport
Goosebumps! I love CC engineering so much! ❤️
Thank you!
what's cc engineering
@@skipperofschool8325 Crash course engineering. It is a series where Crash course talk about all types of engineering
@@theneongamer4957 ohhhh okok
Oh man, the whole story over how and why Alexander Graham Bell got the first patent for the telephone would make for a crazy episode all on its own.
I love your videos very much. But with respect to magnetism, how is it even possible NOT to mention James Clark Maxwell? Almost everything we do as EEs use his equations to predict, model, and improve our designs. He was one of the most influential people in EE of all time. Without his work, we would likely still be living with 1800s technology as our mainstay. His (and Lenz, et al.) equations are what made telegraph, radio, microwave (the magnetron likely would have been years later if not for Maxwell (i.e., cold lunch)), television (let alone a modern day computer with a CPU containing BILLIONS of transistors), and just about every thing else possible to conceive through the mathematical modeling of magnetism. As an example, just look at how much trouble we would be in if PCB layout was done based solely upon autoroute. Nothing with frequencies even near the 1Ghz range would ever work (no PCs, no cell phones, etc.). J.C. Maxwell saves the day! He was able to make the mathematical correlation of so many different disciplines of physics, and quantize the charge carrier (because everything is somehow connected in the end! (Isaac Newton actually said that)) between Gauss, Lenz, Faraday, Ampere, and so many others. His work tied all of this together. His equations not only provide for EE, they are used in quantum mechanics, as well as in orbital mechanics. Maxwell's equations are in play at CERN every day. Not just this, but even light! He explains that even light is a magnetic wave, and makes assignments for the medical field of optometry. This man was nothing short of a genius, and his legacy must be celebrated!
Thanks for making these videos!
I'm surprised that they didn't even mention Benjamin Franklin!
I think the main reason for this is likely that they were scientists, not engineers.
Science and engineering are both closely intertwined, but the show seems to want to focus on the people who used the knowledge obtained by scientists, to actually build things. Maxwell determined equations for how electricity worked, but I don't know if he actually built anything with that, or developed new devices.
That said, they have touched on more scientists as well, I think its also just a lot of people related to the field. Can't cover everything, and they'll probably touch on Maxwell when they get to his equations.
Maxwell was a theorists, not an engineer or a practical scientific. Many of his formulas where already known (Gauss,Lorentz...) and his main works are mainly modelling Faraday’s experiments. Maxwell himself referred to his field pictures and descriptions as The Book. Nonetheless his legacy is invaluable, but because he accelerated the development and related light to em, but really he didn’t invented anything 🤷🏻♂️
David Lenir Invented? No. Discovered? Yeah. Sure. And ELECTROMAGNETIC WAVES dude! That’s hardcore!
You can’t invent something that happens in nature. All the time.
But he is the archetype of a theorist scientist, as he did all his models in his house in Scotland, barely ever visiting a laboratory. He’s awesome, but he belongs to a History of Science episode, not to a Engineering episode.
I wonder when he will appear in the HS CC
we can say that he invented (formulated) the concept, not the phenomenon XD
2:58 - "His description was sent by telegraph to London". T-H-I-K-K
XD
Didn’t notice that
This was a beautifully arranged informational video that gave me insight to knowing that the history of any topic can ignite and fuel a deeper love and understanding for any topic.
It looks like telecommunications had a really rich history, since most of the video is talking about it.
By the way, I study power Engineering in Syria, And I would be really happy to help translating the videos of(Crash Course Engineering) into Arabic.
I love this lady, i love the way she speaks. So much energy
This was such a detailed, interesting and an amazing video. I really enjoyed the video and I grasped a lot of information too. Keep up the amazing work!
Thank you!
Did no one else notice the early telegraph spelling "THIKK" when supposedly describing Slough? Gave me a good chuckle. I love this channel.
I used to remember elementary and throughout my middle school time, even up to my time highschool time, Thomas Edison was painted as a genuine person who fought to develop his idea against the manipulative nikola Tesla. Not even kidding, they made us watch an animation about his life and it showed my Tesla as the villain. Kind of interesting up until 3 years ago I heard otherwise, and the tables turned.
For some reason people find it hard to listen to a story that doesn't have cartoon caricature. In real life, both were brilliant inventors. At the time, Tesla didn't get the recognition he deserved, so media portrayed him as the "bad guy". But now that Tesla is better known, people portray Edison as the villain, going so far as to claim he stole inventions from the people he paid to work for him. Improving on previous inventions (the light bulb) is not theft. Nor is independently inventing something (phonograph).
Yeah and Tesla invented atomic bomb, internet, computer, Death Star, lightsabers, cellphones etc. Basically, he invented everything in this world.
Me too!
Oh Yeah Electrical Engineers Unite #represent
To omit the experimental work of Faraday, is mistake. Albeit that Maxwell took Faradays experimental notes and turned them into mathematical theory, from which Maxwell derived approximately 16 equations which were condensed into the 4 famous equations, still used today, by Oliver Heaviside.
I could listen to this lady all day. Great video!
Whoever you are, wherever you are, I hope you have an amazing day! :)
Random Weirdo right back at you!
Random Weirdo you too u random weirdo
U too
Thank you so much! Have a great life. Stay random. Stay awesome.
Yeah, right, but electricity powers a large part of the world. Flowing water powers some. Wind powers qite a bit. Etc.
Bottom lline: the Sun is the only thing that can be said to power "the whole world."
His description: "T, H , I, K"
I see what you did there.
Crash Course should do a graphic design/animation course on like how they do Thought Bubble and everything! That'd be so cool
Edison was fighting a loosing battle. Direct current simply does not have the range necessary to make it practical for large scale production and use.
DC is actually better for long distance transmission. Nowadays we consider it worth converting to DC if the line is longer than 700km. The problem is that back then there wasn't a power converter for DC, so you had to generate, transmit and distribute at the same voltage. Transmitting at a low voltage means you have a high current so you lose a lot of power along the way because of the line's resistance. While for AC there was the transformer, so you could generate at around 15kV, transmit at 500kV or more and distribute it to homes at 220V for example. Even today, DC converters at that scale are very expensive (hence the 700km threshold), but they're getting cheaper and more efficient every year, so maybe we'll see DC used more often. Then again, our whole infrastructure is built around AC so it's hard to change.
Thank you for the info. ^_^
can you explain to me how " Transmitting at a low voltage means you have a high current" , thank you
Power is Voltage*current, so delivering the same amout of power at a larger voltage requires a smaller current. A transformer allows us to do that conversion for AC electricity.
It's the same principle as the lever, the hydraulic lift, the gear transmission etc, you trade force for speed. Voltage is the equivalent of force for electricity, the electromotive force that drives the electrons, and current is the equivalent of speed, the rate at which electrons move along the wire. As a matter of fact, before digital computers existed, electronic analog computers were used to simulate various physical phenomena using these analogies. A capacitor is the same as a spring if you use your imagination.
Thank you!
To those who may scroll down here (or have already commented) to say that they missed certain prominent figures or breakthroughs that you may feel should have been mentioned in this video, there are a couple things to consider:
1) This is only the 4th in a series of videos, and at the moment we aren’t quite sure what else may be covered at a later date.
2) It’s also possible that the event or figure was covered in an episode of a different series, as is the case with James Clark Maxwell and his equations being mentioned in their series on physics, in which case it doesn’t make sense to spend too much unnecessary time on it here.
3) As others have said, many of the specific figures people have mentioned aren’t engineers at all, but rather scientists or mathematicians. While it’s still crucial to give due credit to *all* those who helped bring about these advances in engineering, the purpose of this series is to highlight the engineers themselves, as well as their creations.
That said, I do love seeing the discussions in the comments about these figures and their contributions to not only these respective fields of engineering, but to engineering and science as a whole. It’s genuinely amazing to see how the influence of many individuals can create these innovations as each person builds on the foundation laid by the last, and especially to see the underlying framework laid out by some of the lesser known, but equally important, contributors.
Its interesting that Edison was given as much credit as he was, considering how much he stole, lied and generally was more of a salesman than actual engineer.
Additionally, so much interesting history has been left out, the field of control and automation in electrical engineering has had an absolute insane impact upon the industrial field! Far too early a cutoff even for a crash course.
Source: Electrical Engineer :)
jonasn5 I also at least expected a mentioning of Maxwell('s equations). Also control is more multidisciplinary, namely I believe mechanical, chemical and economics all do control. Control also might have more of an origin in mechanical engineering, for example a centrifugal governor. But I doubt that control will be mentioned in the crash course about mechanical or chemical engineering as well. (I myself study control theory and have a mechanical engineering background).
K van der Veen since this is about engineering, I think the idea was to focus more on the teche of electricity, and to put less emphasis on the episteme of electricity.
jonasn5 he was a great technician, thou. He didn’t just stole ideas, but improved on it, and found simple ways of making useful things. Like he improved the lightbulb after trying hundreds of materials, and the gramophone was simple and clever.
Also, little known fact, he highly respected Tesla, as he gave one of his laboratories to Nikola when his burned down.
I mean, he wasn’t as bad as “Tesla fanboys “ portray him lately. Reality is complicated.
Edison didn't steal anything. People just mistakenly credit him for things he wasn't the first in (but he had independently created). It's a little bit like how people like to attribute everything to Tesla these days. Edison improved massively on previous inventions (not theft). He also paid engineers (like Tesla) to do work for him. This is exactly how research and development works today: Nobody says Elon Musk stole car/rocket technology from his engineers, despite working them to death. Edison made massive advancements in his field and the only reason people bash him is because they think it's the only way to make Tesla look good. Edison' didn't steal the light bulb: he just invented a better one through hard work and perseverance. I'd also like to debunk a common myth: Edison never promised Tesla a large sum of money and then refused to pay it off (Tesla never said this).
If I am mistaken, please direct me to any inventions that he legally stole. Preferably with a better source than "Tesla wrote this decades after working with him and Tesla can't be wrong."
24680kong Well, Tesla’s account of the conflict he had with Edison recalls him saying so, and that later Edison said it was a joke. If you don’t think it happened you should explain why Tesla would leave the company to dig holes, and afterwards say that was what happened.
Host and content are A+. She seems to be born to teach the greater public engineering. Can't wait for chemical.
Been waiting for this one, EE represent.
When I went to MIT in the Fall of 1960, one of the frats was in an area of Boston which had DC. I don't remember why, since I was in a dorm, but I got an AC / DC / battery portable radio. Today, I can't imagine finding such a thing.
Actually, though I know the type that you mean, the modern equivalent are quite common. Check out a camping / outdoor supply store for a radio that will run on AC ( with wall adaptor, sometimes sold separately ), DC (USB plug), 2 x AA batteries, and usually have a small built-in rechargeable battery, plus a solar cell built in, too, and sometimes a hand-crank dynamo.
I'll tell you what though, engineering studies are hard. Just had my chemistry exam today which, I have the feeling, I failed and you have then these down moments where you think of just giving up and work directly instead... But I must say crash course does a good job on showing the history behind these studies and their creations since.
I feel you. That's the same in any science field. I failed my chemistry exam on the first try as well and more than one time wanted to just throw my studies into the bin. So, from a biologist to an aspiring engineer then: I wish you the best of luck, perseverance and hope you keep your chin up! ;3
Engineering is like that. It's a path that hurts and may threaten to destroy your spirit but it also shapes your mind and helps u see the world much differently. Keep fighting. You never know how much u can give back once you get the degree.
I have learned sooooo much from crash course!!I love the crash course team and its founders for the free education!!
Super trop cool j'adore les cours d'anglais avec Nathalie Kauffman! Good video !
Thank you for the info on Edison! Great video!
Do one of these on architecture please
THIS WOULD BE AMAZING
Architecture itself does not count as engineering, but if you are talking about architectural engineering, it is a mix of structural engineering (a subfield in civil engineering),
mechanical engineering and electrical engineering.
*Meh. Names are just humans trying to put reality in boxes.*
涼茶 do not forget building physics. Indoor and outdoor climate. Also engineering.
those topics are included in civil engineering
Loving the videos! keep them coming!
You should have done 3 videos for each field. I felt this was too short
Fascinating and clear.
My favorite crash course after computer science.
Also, the new theme is lit. Also also, great video!
Thanks - our friends at Synema Studios did a great job on this one!
The telegraph spells out DFTBA. Don't Forget To Be Awesome!😀
Wish I could have learned more about computer engineering! I am about to start my upper divisions this fall, so excited.
Yes!!! Finally my favourite ❤❤❤
Okay episode but so focused on executions and glossing over of the really good stuff.
Invention of the battery to electric cars and trolleybuses. Only 10 minutes and it did not do the field justice focusing on the electric chair.
Amazing Video!
Electrical engineers represent!
Did you know that there are reversible hydroelectric plants? They can either generate energy by letting water through the generator like a normal plant, or consume energy by turning the generator into a pump to drive water up the reservoir. So they're basically giant batteries. They can be used with solar and wind generation to store the excess power and release it when there isn't enough sunlight and wind to meet the demand.
Believe it or not, as late as the 80s, some EE professors refused to go over transistors since they were "not as stable as vacuum tubes" and were known to burn up
Extream,y well put, but I wanna show those videos to my little niece because I want here to be more interested in my work field so I wish you can include more live examples like having a small transistor in your hand when you talk about it. but in general, you are doing an amazing job.
I love these and I can’t wait for chemical engineering!
I've read the Bell System Engineering books - fascinating stuff in there. I've also read theory and operation of the old Crossbar switch gear. That too is fascinating. In essence an electro-mechanical computer. Another fascinating one is the development of the transistor - from point-contact to junction to smaller than the naked eye can see today.
Incredible information.
And very well presented.
You guys should totally make a Crash Course: Anthropology lesson! That would be amazing!
God i love hearing this woman talk
This is so good but do you add Turkish subtitles ? Cause I want to show to my friends ..
Good video! I'm an electrical engineer on the computer side of things. If anyone has questions, fire away!
Hi. This fall im going to be a senior in highschool. Im so looking forward to applying to EE. I am pretty good at math and physics. I love what EE deals with but also electricity and magnetism are the ones i find the hardest from optics, EM, thermodynamics and classical mechanics. I think it might be because its something you dont really see? Any advices for me in order to prepare better for when I go to college? Thank you
EDIT : Also, I think I find the best suitable for me going into telecommunication side of things
Hello! I'm taking ECE this school year, is it the same as EE??
Generally
EE - Eletrcial Engineering,
ECE Electrical & Computer Engineering
EEE - Electrical & Electronics Engineering
The title on my degree is EEE but the department changed it's name to ECE the year after.
Electrical Engineering is circuits, Electromagnetism, power (e.g. 3 phase), control systems
Electronics engineering is diodes, transistors and integrated circuits (ICs)
Computer engineering is the physical things that make computers work (start at logic gates and work all the way up to large ICs) with a touch more programming.
If you can get Pre-calculus and Trigonometery in High School, I'd recommend you do it. It's the backbone of all the engineering and physics courses you'll take.
Brian Miller the meaning of ECE here is Electronics and Communications Engineering. Is it still the same?
I LOVE THESE VIDEOS! Aaaaaaa!!
Hero described[12] the construction of the aeolipile (a version of which is known as Hero's engine) which was a rocket-like reaction engine and the first-recorded steam engine (although Vitruvius mentioned the aeolipile in De Architectura some 100 years earlier than Hero). It was created almost two millennia before the industrial revolution. Another engine used air from a closed chamber heated by an altar fire to displace water from a sealed vessel; the water was collected and its weight, pulling on a rope, opened temple doors.[13] Some historians have conflated the two inventions to assert that the aeolipile was capable of useful work.[14]
Hero's wind-powered organ (reconstruction)
The first vending machine was also one of his constructions; when a coin was introduced via a slot on the top of the machine, a set amount of holy water was dispensed. This was included in his list of inventions in his book Mechanics and Optics. When the coin was deposited, it fell upon a pan attached to a lever. The lever opened up a valve which let some water flow out. The pan continued to tilt with the weight of the coin until it fell off, at which point a counter-weight would snap the lever back up and turn off the valve.[15]
A wind-wheel operating an organ, marking the first instance in history of wind powering a machine.[4][5]
Hero also invented many mechanisms for the Greek theater, including an entirely mechanical play almost ten minutes in length, powered by a binary-like system of ropes, knots, and simple machines operated by a rotating cylindrical cogwheel. The sound of thunder was produced by the mechanically-timed dropping of metal balls onto a hidden drum.
The force pump was widely used in the Roman world, and one application was in a fire-engine.
A syringe-like device was described by Hero to control the delivery of air or liquids.[16]
In optics, Hero formulated the principle of the shortest path of light: If a ray of light propagates from point A to point B within the same medium, the path-length followed is the shortest possible. It was nearly 1000 years later that Alhacen expanded the principle to both reflection and refraction, and the principle was later stated in this form by Pierre de Fermat in 1662; the most modern form is that the optical path is stationary.
A standalone fountain that operates under self-contained hydro-static energy; now called Heron's fountain.
A programmable cart that was powered by a falling weight. The "program" consisted of strings wrapped around the drive axle.[17]
Shini Somara is an amazing presenter!
What can engineers do that physicists can't?
I've just finished my first year of general engineering. I get so specify after my 2nd year. I've got to say that if I specify in anything other than chemical engineering (or maybe civil) then I'll feel like I would've been better off majoring in physics. I've got many reasons for this, one of them being that I love physics. I enjoy mechanics, electricity, fluids, thermodynamics, etc, which is why I chose general engineering. I also really enjoy learning about, for example, how a capacitor works not just its characteristics in a circuit and how it can be used. This was covered in electrical engineering (and in my IB diploma before that), but when we learnt about the inductor for example we skimmed through how it works and mainly focused on its characteristics and implementation in circuits (don't get me wrong I really enjoy that too). Another reason is that I haven't really heard of anything that engineers can do that physicists can't. For example, The Art of Electronics (a great book for anyone studying electrical engineering) was co-authored by a physicist not an electrical engineer. Also, my materials science lecturer actually a physics major who tailored her PhD towards materials science. Not to mention the plethora of things that physicists get to study that engineers don't (dark matter, relativity, quantum mechanics, etc). Its too late for me to switch to physics without repeating a year in uni (thats not something I'm willing to do and I'll probably end up majoring in chem eng anyway), but I still need this question answered "What can engineers do that physicists can't?"
I just want to clarify that I absolutely love engineering and that even if I majored in physics I would most likely end up in an engineering-type job aka not really focusing on research. I'm also really leaning towards majoring in chemical engineering so thats good.
In a good engineering school, you'll learn more than physics and math. You'll learn about economics and finance, human resources and project management, because that's a large part of what an engineer does. You'll also learn about the fundamental building blocks of your field. In EE, depending on your sub-specialization, you could learn about FPGAs, microcontrollers and PCB design, or the details of induction motors, transmission lines and circuit breakers. Physicists are concerned with pushing the boundaries of Science, so they wouldn't learn about any of these applications at the university. Of course, in the end these specializations are just a bag of courses that the university thinks are necessary for the work that you'll do once you graduate, but every job is different and the world is changing very fast, so I think they're becoming less and less relevant. For most jobs you'll end up having to study a lot of things by yourself, and you won't need a lot of the things you studied at the university.
Yeah I see what you mean. I do take some of these extra classes and I'll take some more in the year to come. I was initially gonna comment on how they're not a good enough factor to make me choose engineering and not physics, but I changed my mind when I started to list them out. The classes I've took so far covered some of systems engineering basically, how to come up with requirements for a project, how to achieve them, how to check that you've achieved them, also designing for a specific goal like manufacturability or usability, ethics, and report writing (not lab reports, but reports you'd write for an investor or smthg), etc. Ill be taking finance and law classes in my 3rd year hopefully. Considering that I'd prefer working in industry over doing research, these classes (which physicists don't take) are a good reason to major in engineering.
Are you a naruto fan by any chance? I assume so because of your username
Well, I was a fan of Naruto when I made this account back in 2006 or 2007. I dropped it eventually (didn't read or watch the end of it nor Boruto) but never bothered to change the username.
I think one of the most underrated courses for engineering is quality. One of the schools I went to didn't talk about it at all, and the other had a 16-hour course. But it was a pretty big deal in the first company I worked for, which designs and manufactures lab instruments. Quality gives you so many tools to measure how well projects are going and solve problems along the way, and tells you how to interact with suppliers, employees and customers to find ways to improve products and processes. It is a major on its own, but I think it's very important for an engineer to have some basic notions of it.
And yes, you write *so many* reports in engineering. Eventually I started using LaTeX, in part because the source files are more organized and the result looks really good, but also because it kinda feels like programming, so it's less boring than using a WYSIWYG editor like Word.
Nice explained.
Waiting for AEROSPACE ENGINEERING. 😃
Please do videos on transistors
Talk about environmental engineering! Noise monitoring & control, sones & phons, noise rating graph, daily noise dose!
Thank you for giving this modern age the ability to..
LOVE This
Great video
Computer engineers of the world, unite!!
This is gold
what is best to learn about robots electrical or mechanical
Good video again....the bookshelf however is driving me crazy.
Can u please do a crash course on An Inspector Calls I am studying it for GCSE and after watching Jane Eyre (which helped ALOT) I would really appreciate you doing a video on it
Super awesome!
no link to Crash Course Computer Science??
Whaaaat? No mention of the induction motor by Tesla 😕
The history of electrical engineering, not modern stuff. The foundation of EE and the men and woman who pushed the discipline further.
"By capitalizing on the work of many others" By the power of communication coding brought by electrical engineers, I get what you were trying to say
You guys should do crash course music history!
But what's the next episode
That Cooke and Wheatstone telegraph looks like it could be neat to setup as a Ouija board like device in a horror movie.
It's pretty clever. I'm guessing it's not optimal because the letters are all sequential from top to bottom, left to right.
She should have said: “And you’d be surprised in how much depth is involved in the history of Electrical Engineering. Well, it [might just shock you!]”
(Add 2 eighth-note drums, and a crash a beat later)
Heinrich Hertz discoverd radiowaves in Karlsruhe, Germany not even 200m from where I live.
Awesome
That bookshelf bothers me.
It was clearly designed by an architect.
It was like if a drunk carpenter said "I am bored" and started building it.
I swear it's crooked
It is not an argument. Tesla had the patents, Tesla did the pioneering research, Tesla invented radio. End of story. He was quoted as saying "Marconi is a good fellow. Let him continue. He is using seventeen of my patents."
Tesla invented the atomic bomb, internet, Death Star, cellphones etc. Just say Tesla invented everything.
where might i find more in depth videos on engineering? im considering an engineering degree and i need something deeper
BuddhaBebop you should watch electroboom. He’s a cool electrical engineer. His videos are way more in-depth. This video didn’t do engineering justice. I’m an electrical engineer and I would recommend it if you like math. But when I was in college I almost chose civil engineering. It’s hard to decide.
thank ye kindly faith @@faithmccrary5692
I wish Michael Faraday and the faraday scale was mentioned
Crash Course physics was for high schoolers, this series appears to be for grade schoolers. Will you have more depth in future episodes?
No mention of Nikolai Tesla?
He's massively overrated
do one on CHEMICAL ENGINEERING pleaseeeeee
-And if you use Alternate Current, people will think you're gay.
-One of us! One of us!
Yes
at 2:30 only 20 letters can be made with that device. Still a feat of ingenuity but nevertheless quite awkward
What about Software?
stop bashing Edison-- he was a brilliany man just like others at the time including Tesla but lets get real here
Aww yeah, ChemE next stop!
That's really need shelf in the background. Took me awhile to notice it.
Lovely 😍
Not a bad video but I think that it would have been worthwhile to at least touch on industrial automation which has had a huge impact on the modern world.
Love ur videos and u alsao 😘
What about electric motors?
What's in the next episode? They didn't say
you know for a show about engineering that shelf in the background looks really unstable ;)
It'd be nice if you guys had a crash course on women's history
what about computer engineering?
Yeay.. I'm an Electrical and Electronics engineer.
Please do a video on flood engineering (sorry if that’s not the correct name)
Civil Engineers try to prevent floods. Is that what you're thinking?
Brian Miller I think that’s what is was meaning
Beautiful and intelligent...
Crash Course changed my life!