Lec 32 | 8.01 Physics I: Classical Mechanics, Fall 1999

[okzoia]

The Union Pacific and BNSF railroads use ribbon rail, quarter-mile sections that are WELDED together. There are no gaps. Nontheless, they have virtually no problems with rail bowing up or out. So, how in the world do they avoid the expansion and contaction problems??

Rick

[ericajjful]

very interesting thanks

[Kricardose]

I am very happy to see the vidoe after you give this Heat Thermal Expansion

[Mjhond]

Steady I Really Like This Video Heat Thermal Expansion

[Mjhond]

Steady I Really Like This Video Thermal Expansion

[READTHISBITCHESZ]

hij is nler

[bikr1975]

would you please tell me if there are any over the counter products that can be added to gasoline to add heat to the fuel in the tank. im using this info to increase HP and possibly mileage. anything that you can think of would be greatly appreciated.

thanks for your time.

[DutchHouseMusic1]

Is this guy Dutch ? i got a feeling he got a Dutch accent

[akashtandon1]

@DutchHouseMusic1 Yup he is!

[cgw34743474]

we here in the us do use a thing called a thermocouple is a device consisting of two different conductors (usually metal alloys) that produce a voltage proportional to a temperature difference between either end of the pair of conductors. this will stop the gas when the pilot light goes out this has been a law here for about twenty years

[robobrain10000]

Europe > America

[PrognatusSeptem]

I had no idea MIT had these classes here. Thank you. This is a real privilege.

Peace,

7

[TheF35hornet]

albert einstein!!

[ashtonmorris]

Yea crazy dotted line skillz for sure, and the fruit on the shirt I dont get.

[MaverickSlim]

@ashtonmorris Educators use all kinds of tools for learning. Thats my guess, sure worked didnt it.

[10babiscar]

this guy looks like the stereotypical crazy scientist

[keithbt430888]

looking like a professor that likes to wear fun shirts

[junior1984able]

where b is the coefficient of volume Expansion

[junior1984able]

where b is the coefficient of volume Expansion

[junior1984able]

So the change in volume= BVsubi(change in temp.)

[Marcownz747]

Two people think scientists would be better off responding with "miracles" than actual science.

[MohoBiechiz]

duuuuuuuuuuuuhhhhh

what?

[WePlayTheFox]

Two people use Fahrenheit

[djsumbody1]

Who the f@ck cares??? Yes, I'm the physics prophesor hater. =] Love love...not "heat," "cold," and "objects." I was looking for a song, but this has been entertaining. 1

[arsenelupin123]

U.S.A. UNITS SYTEM PWNED!

[arsenelupin123]

In fact, for some weird reason, Celsius had associated melting ice with 100, wheras boiling water was 0.... But somebody thought it was a bit weard :D.

[Imrooot]

Dr. Emmett Brown?

[baylewis]

i wish i had this guy when i did physics at college

[trhisdone]

Good Lord its Dr. Emmett Brown he has come back from the future. .lol....

[partonfilaton]

i love both europe and the us. each has its pros and cons

[CodeEphyon]

very nice, Ty

[Playbahnosh]

Woah, that dotted-line drawing is awesome, I need to learn that skill! Something to show when teaching. :)

[partonfilaton]

first of all what is the deal with the chock? it s so professional. and second of all thats what the learn in mit? excuseme but thats high school...

[KoolChora]

@partonfilaton chalk (no biggie)

[partonfilaton]

oh yeah ty

[Remorath]

@partonfilaton This is the non-advanced first physics course at MIT, it's basically review on a higher level.

[comebackata2]

fail subtitles

[pkrska]

Isn't this the professor on the Hilarious house of Frankenstein?

This guys great. Very good teacher.

[mrnarnar]

Is that a cantalope on his shirt? Man I love weird shit shit like that.

[Richard33335]

I miss physics, about one of the only things I do miss from school

[halamano]

What a great teacher. You´re so lucky!

[blackweb12345]

i know that this is really off topic but since we're talking about equations ( math) i was wonder if i were to be a cardiologist how many years of math in high school and college would i have to take?

[Fittykent]

4 in High School. I'm not sure about college.

[darkoriginhunter]

Depends on the school, but I believe in college you'd be required to take calculus 1 which means you would have to either take or test out of college algebra and analytic or planar trigonometry

[mijnnaamisaaron]

what's up with the slice of mango on his shirt?

crazy 90's fashion

[uncoordinatedvids]

@mijnnaamisaaron hes dutch

[Sharpie817]

@mijnnaamisaaron looks like cantaloupe. lol

[mahela1993]

@mijnnaamisaaron I've seen him wear a bull's eye in another video..

[TheLeykis101]

@mijnnaamisaaron That's no slice of mango, its a slice of melon. Genius fashion i would say.

[lorent123]

"haha! i call that L1..... Haha! call that L2"

lmao

[donuthead7310]

i have a friend who knows how to do that dotted line trick XD

[darkoriginhunter]

I can do it. Hold the chalk as far from the writing end as is possible and write with the chalk perfectly perpendicular to the board. I don't know if that's how he does it, but it works well.

[calebp9503]

I broke one of those red thermometers once, they're alcohol based.

[CanisLupus1987]

not alcohol... mercury.

[calebp9503]

no, the cheap lab ones are alcohol, the kind you check your temperature with at home are sometimes mercury.

[lorent123]

mercury is a metal, it is shiny, like liquid iron for example. The red ones are just colored alchool.

[FL3JM]

That is some awesome dotted line-skills, i had to rewind just to see that again. :D

[dyeballa04]

@FL3JM hahah dude....so insane

[mahela1993]

@FL3JM He probably uses a special holder...

[Wond3rballs]

@mahela1993 No, you just reverse the way you would normally write and let the chalk grab friction on the board and it vibrates as you drag it.... quite fun once you figure it out.

[mahela1993]

@Wond3rballs Interesting.... but on another lecture, it looked like he has a special holder. and I haven't seen him dust his fingers off after using the chalk.. which also suggests that he has a chalk holder.. (Oohh.. Sherlock Holmes heheh ;-) )

[Wond3rballs]

@mahela1993 Well maybe, but the holder isn't a necessary condition to draw the dotted line ;)

[jaketubedeja]

Walter LEWIN!! hes the best!

[DonEddy89]

this prof is very good in teahing stuff.. ^^

its fun liste to him.

[westlife0007]

what is the name of this prof guys ?

[mahela1993]

@westlife0007 Walter Lewin

[erichmann3]

Awesome- I will watch this again.

[chimmichonga12]

his dotted lines are freakin awesome

[chathurachathura]

thank you sir

[deathcherry13]

why is there a piece of cantaloupe on his shirt?

[mahela1993]

@deathcherry13 Sometimes, he wears a 'bull's eye'

[wyz135]

lol, what's up with the slice of honey dew on his shirt?

[KillerB1138]

Good prof.  But...

Is he wearing slice of cantalope on his shirt?

[aa6757]

That is a very good question.

[Mehryyy]

yeah and it looks so cute

[aartisticmusicc]

OMG! this teacher is such a good explainer dude...

[cronizile]

fool this dude is trippy i dont even understand what that fool is tallkin about like fuckkk MIT? how did i even get onto watchin these vids im just like postin it up in my homies house and this vid busts out the cuts from some dank vids

[gambamama]

Oooohh! My bad :) Sorry about that.

[zombierobopirate]

haha whats with the cut-aways where he talks oddly. is he correcting mistakes in the lecture? It sounds silly

[gambamama]

He doesn't speak "oddly." He speaks with a Dutch accent. I believe he's doing incredibly well seeing as it isn't his first language.

[zombierobopirate]

no i meant occasionally during the lecture it will cut to a wall or something and his voice gets very low -> odd compared to his normal voice which is fine

[sydalfox]

you are right; he is correcting himself during editing. He does that in all his lectures (Physisc & Electricity,...) He does the same with errors on the blackboard -> then he interrupts the video and gives the correct info (cut-away for a few seconds)

[alecat9117]

this guys awsome, wheres he lecturing?

[berserkernim]

dude r u stupid?

MIT MIT

[VanDeGraaff]

I loved this! kinda inspiring, pephaps i should take a higher education?

[eleos244323]

boring....

[Darkfoster22]

If i was you i wood find the real world boring also.

[mremile72]

interesting :)