Lec 11 | MIT 8.02 Electricity and Magnetism, Spring 2002

[clairebehun]

i enjoyed this vid

[stavrospod]

this was so awesome!

[thebigfootme]

good lecture!

[dgilmour18]

You can't possibly dislike this lecture

[OKMUNWURX]

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[Magiclalita]

Ese no me gusta, es NO ENTIENDO? jajaj

[mess1ahh]

Nikola Tesla ignored, yet again! But who wants people building flying saucers in their backyards?

[00JosefK]

@mess1ahh

Unfortunately Tesla suffered the indignity of having one of the worst of all shitty 80's bands name themselves after him.

[ClarinetgirlM]

i draws straight lines freehand :o

[wirlin92]

you can shield a magnet to shape the field can't you? with ceramic plates. And you can also put an electromagnetic field on a molten magnatite and cool until it is solidified. then it will maintain a natural Yet altered magnetic field relative to the electromagnetic field that was applied.

[gsamov2]

Teachers like Walter are rare. He brings a certain excitement to physics, and I find myself coming to his lectures time and time again when I need clarification for topics my teacher (although good) didn't cover well. There's a quote I found by this professor, "If you don't like physics, it has nothing to do with physics, but with the teacher who taught it to you." Its not a direct quote, I'm paraphrasing a bit, but so true.

[MacDaSkwack]

I'm a commutator! Haha what a great lecture

[Molikai]

Listening to this in the background while studying 3rd Year physics at Glasgow university - which is one of the best physics depts in the world. It's really helpful for recalling all the early stuff while I go over Maxwell's Equations. :)

[jiasenify]

i heartfully thank mit uploading this videos,that hv helped me score my rank in my boards....n m glad that m a user of youtube...

[ghostman515005]

HAHAH the subtitles went [wsssht] and [wssht]!

[rlew876]

This is so long...But interesting!

[rlew876]

This is so long...

[digicho]

Equipped with Faraday paradox not need for commutator.

[mdinka]

wow @5:08 for the first time in my life I see someone properly explaining why a cross / dot is used for describing currents.

[bobesfanchi]

I was looking for something else but I came across this and I watched half of the lecture. He's an awesome professor.

[valentijn1]

The teacher has a dutch accent? And I want a magnetic monopole!

[valentijn1]

The teacher has a dutch accent?

[Magnetmotorman]

You will never find a magnetic monopole with the naked eye...even using the best microscope!!! It is like having a finger print on a piece of paper, and yet, no physical finger to examine!!!

[transfusablepng]

Free Energy is real and its here! The Oil companies are doing everything in their power to stop these information. If you want a Free energy machine do a search in youtube for the LT MAGNET MOTOR , Join the revolution!

[jaipipor]

"you've never seen a vector, I'm going to show you a vector"

[dan020350]

i see so that is what they called electric monopole/ 

[dan020350]

so that is how the compass works, i always thought it was like that if i thought a little more time to mediate upon it.

[nornd]

Monopoles are what create a dipole,

when separeted, they create electricity.

wbabin.net/science/wippler.pdf

[dan020350]

@nornd hey nord, didn't expect you here to leave a comment :))

[VideyoJunkei]

Thus coils are used too amplify the forces...

[bigfhead]

I got my engineering education through the UC system and it was a good education but not like this. My physics professors couldn't have been more bored with undergrad classes. Lewin is enthusiastic and motivational. I'm jealous.

[sirlepto]

Hahaha, wait until electro-magnetic field theory relates to gravitational field theory :D

[warriorsquest]

Does anyone know the specs on what was handed out in the motor kits? I got the information from the website, but I still don't know the size of the magnets or gage of the wire, etc.

[WhoopingWindows]

Brilliant!!

[riflemaster]

Well done MIT. Really really good. Thank you so much.

[DarkTrunksGeorgeSim]

300 Amperes! Hmmm that will be hard to reproduce at home.

[cettolaqualunqueeee]

@DarkTrunksGeorgeSim is a car battery..the normal is 45-60 A but u can find it in a car-shop

[Daclaem]

great teatcher !

[nacashok]

thanks a ton !

[Antiinequity]

realy good

thanks

[kavoos1000]

all vier :)) i love this guy, learned so much from him respekt walter lewin

[giovanni9107]

@kavoos1000 lol, I guess he was thinking in dutch, he's awesome

[Mattprole]

24:34 God damn it. Now I want Cheerios.

[Laphroaig16]

I like the style and manner in which this lecturere delivers his content. He is easy to listen to although most of the content is a bit beyond me it is never to late to learn. Thanks MIT for put this on the web.

[scottbpt]

i agree 100% laphroaig....I think it really speaks to how high the level of education is at MIT , that this is actually a "base" course required of all students as an intro 2 MIT. lol...so much have they already achieved.

[sonicboom23]

lol @ 49:07, the cameraman got distracted, haha..

[xenoepist]

@sonicboom23 me too -.-

[wirelessboiler]

When I was a Uni it would have been so good to have had U-Tube. The internet has realy just started. Although im happy to have been part of that generation, the fact you can get lectures online, realy does help. Exam results are up again! Why? Better access to information/ easier questions and more user friendly materials to study - like this one. Rock on Science teachers....they are shit hot.

[dyingemotion]

it's really cool how they have to build a motor

[albert91tgn]

I would go USA just to take classes from teachers like this one. You guys should see how this classes are given in my school "read, belive and shut up".

i'm amazed

[yottanuclei]

they don't pay infinite dollars for nothing

[goodluckpeace44]

aristotal would teach his stdents for free. but those days there were serious students not love birds

[PomyslChwile]

i dont get it :P

[goodluckpeace44]

get what? what I was saying is that commerce is an intellectual thing, and is nessesery but it put creative people in trouble sometimes, somethings are not commercial but still great masterful work

[djveneko]

@albert91tgn sadly not all prof are like this in the U.S. and it drives me insane cause i get so jelly when i see all this cool prof in other universities.

[sea52020]

@albert91tgn you know... i had the same idea s yours, and I came to the US 3 years ago, and found that, this would happen only if you goto certain schools.

[xenoepist]

@albert91tgn Not all teachers in the US are like this one (sadly) :( My teacher is horrible... not to say he does not know what he is talking about, my teacher's knowledge of Electrostatics (and physics in general) is amazing, but his teaching skills are not as good as Dr Lewing's

[HOTAZNGRL123]

lol @ magnet on the TV 24:20

[jpenneyatyahoodotcom]

dutch, isn't it?

[killer64us]

haha

"All fier - all four"

Slip of the German tounge

[ohmannhey]

Actually it´s dutch ... but the wording is the same, ;-)

[bucles2000]

Professor Lewin with all due respect you deserve,magnetic monopole do not exist.If you think theoretically is posible to find out magnetic monopole,I advise you to erase forover relatisitic quantum mechanics.

[mademedoit]

"do you see the distortion? You are so quiet."

they are mesmerized by the commercials...

[BGasperov]

I have a question.

It follows from the Newton's third Law that for every action, there is an equal and opposite reaction.

If the magnetic field exerts force on the wire, then the wire exerts force on the magnetic dipole as well. But we didn't see that, did we?

[BGasperov]

oh, stupid me, now i get it :)))))))) it was a heavy magnet lol

[amrosik]

:)))))))))

[Adrianrff]

Are this lectures aimmed to a particular major in MIT? like engineering, or is it part of a basic cycle aimmed to any student who needs to take a physics course in order to complete his major? (Please read between lines, my english is not the best)

I'll appreciate any answers, Thank you

[MIT]

8.01 (or some variant) is required of all MIT students. It provides a foundation in physics that future courses build on.

[pinguinpower]

I always inquire on MIT lectures prior to a test on the subject. It really helps me get through the highschool courses, professor Lewin has been a great help over the past. It's nice to see that a fellow Dutchman inspires so many into the world of science. Keep up the good work!

[tonyrosam]

remember people, isolated systems do not exist in reality, therefore try not to use them. i know this may sound irrational but if you want a full theory u must not use isolated systems :)

[PixelKlotzer]

ouh that's cool^^ I'm german but it's realy interessting to listen an english lesson =D

[igleheart72]

You're German? Wie ist es im Deutschland?

[chaitnath]

excellent...he shows you how things apply to the real world, which other lecturers often ignore...

[poloacho]

Amazing lecture!!! It's better that my boring class q¬¬p

[NinjaAnimeNancy155]

yay the proffesor rocks.

[szymonbartus]

Great lecture, as always. It helped me understanding some concepts from my high school physics.