Lec 1 | 8.01 Physics I: Classical Mechanics, Fall 1999

[iv54]

the best thing about this is that classical physics hasnt changed so every thing we learn from this video is still relevant, if this was quantum physics it would be a different story.

[arsenechoya123]

like if if you are watching this and you are not even at uni lol

[hustleton26]

it'd be so cool to see what all the people in this lecture ended up doing, considering it was filmed in 1999

[KeezoHD]

Who came here just to see him Draw lines!

[Xzibillionaire]

I agree fuck the imperial system. We need the metric revolution.

[avalonmoi1]

BEAUTIFUL COURSE ,OFCOURSE, I AM PHYSICS TEACHER!

[0ccultdemon]

how did he make those dotted lines?? that's impressive lmao

[NTL1991]

@0ccultdemon pure skill

[stavrospod]

wow..great lecture..I am really amazed..very basic but really good explanation..wow..

[you2tooyou2too]

Dramatic hyperbole aside, he does a good presentation, but I would pick a couple of nits.

1.Calling the English system of measurement 'uncivilized' is just ignorance or at best careless. A 12 measure, easily divisible by half, third, & quarter, has obvious advantages for human commerce for which it was developed, over a decimal system, which would be better still if it were duodecimal.

2.A thought experiment clarifies: Would an 8# ball fall faster than two 4# balls connected by nail or thread?

[lysistro]

Physics is the connection between nature and mathematics.

[milenica0208]

See what real physics is

[BestRowingMachineost]

he is best prof. in times now for me.

[Kricardose]

I am very happy to see the vidoe Dimensions Measurements Uncertainties after you give this

[bebeheuy]

I Love The Video Dimensions Measurements Uncertainties It Can Increase My Knowledge

[Mjhond]

Steady I Really Like This Video Dimensions Measurements Uncertainties

[LosAngelasBasketball]

I need someone to design a box that can make anything inside of it dissapear... goood... thanks..

[SB9101]

@LosAngelasBasketball define disappear

[gesneto]

Addition to teaching physics, he taught to teach. Congratulations and thanks for sharing.

[geofdona]

I think he is the best prof i ve ever seen!realy

[kh77im]

Physics difficult, wanted to be a Doc but this is a subject that you need Top Marks to succeed in the medical profession!!

[1borgus]

i think you would be taller lying down because gravity would force all your weight strait down while lying down would let your spine relax and expand a couple of centemeters or so..just my guess

[hellomate639]

@1borgus

Think of the increasing weight of your body pushing down on your joints being released, and how in your spine, knees, hips, feet, etc. you have cartilage and soft compressive tissues.

Also note that the person being measured here was wearing running shoes.

[andreeaweed]

I like this.

[1Bubbles100]

like if your watching in 2012

[Denizen36]

@1Bubbles100 Nah dude I'm in 900 BC watching this on my iRock

[avalonmoi1]

@1Bubbles100 WHAT YOU ARE TALKING?????????

[nocturneop15]

this man is great, wish I could study physics with him...

[lbb2r]

this is an awesome lecture...cant wait to move to the next, thank you very much

[s4sandy5161]

looks lyk a good lecture...isn't it?

[MegaGreenwarrior]

simply love physics <3 !!



[LegitScience]

thumbs up if your watching this in 2011

[concars1234]

@LegitScience no shit, sherlock

[debit256]

wait so why isn't d/l = l^1.2? 

[xiuqin24]

Why was I despatched to Social Arts in 1987 ????????? Grrrrrrrrrrhhhhhhhhhhhhhhhh .......... I should be studying Phyics !!!!!!!!!!!!! Ahhhhhhhhhhhhhhh ...................... Sicko Gifted Education of Singapore back in the late 80s !!!!!!!!!!!

[sourreef]

I love it

[Ren14537]

Physics is simple when broken down

[aminomethyl]

I hate math.

[nouw23]

Is this one of best technical university of the world?

And this is the sharpest image you could create?

More pixals please!!!

[akbarrajani121]

WOW..i like how he did the dimensional analysis to prove time of descent is not dependent on mass of object. i love his enthusiasm.

[TheCricketlivestream]

Wow i like this liecture very much

[TheCricketlivestream]

What is this liecture about for colledge or university

[collliflower]

is this a university/college lecture?

[xiuqin24]

@collliflower

Top Science University in U.S.

[MrKkenj0y]

I used to play skyrim, then i got an arrow in the knee...

Now i watch Physics Lectures on Youtube

[emihsukiv]

this old just talk shit

[shapniko]

Any MIT students here? I'm curious as to whether MIT offers the same physics course for all students, or whether there are separate ones for physics major, liberal arts majors, science but not physics majors, etc.

[geoffbrawn]

is anyone else losing it over how fast he draws dotted lines

[MrMinimalSWN]

@geoffbrawn It's the angle how he holds the piece of chalk that makes it jump away from the board. Thats just physics. hehe :p

[UniversalPhysics]

New video on how to cool matter with lasers. Come to the channel for the higher thinking.

[NaidaTommyeik398]

ehm mia is langweilig

[Graym88]

His grandma was right. When you sleep your spine extends since gravity isn't pushing it down and compressing the spine. When you wake up after a few minutes it gets compressed again. Do it yourself, measure yourself when you wake up as opposed to dinner time!

[imogenegiselle]

Thank you so much Professor Lewin!

[ShakkIsLife]

Socks and sandals swag.

[hahapwndable]

wow, i wonder why no one goes to college, you can just youtube all your classes

[yosoet77]

Hi guys,

I'm studying electrical engineering in the Technical University of Munich and

i want to spend one semester in the MIT. The problem is that i don't know any exchange programms offered in my university with the MIT. An other thing, i ve been told that i need to find a Student form MIT who wants to spend one Semester in my university too, so that i can make an excahnge.

Can you help me or do u have some useful links for exchange programms of the MIT.

Thanks a lot :)

[NicholasKarlsen]

Everything can be derived from meters, seconds and kilograms? he forgot the other half of the SI units: Amps, Moles and kelvins.

this course seems pretty fundamental for being at college level.

[Dr3amerPT]

@NicholasKarlsen you don't use those units in classical mechanics

[NicholasKarlsen]

@Dr3amerPT that is not the point, he stated that ALL units can be derived from three units, which is wrong.

[jeighjoans]

@NicholasKarlsen he didn't say everything can be derived from meters, seconds and kilograms.. The units he was speaking of are Length, Time and Mass.. he chose meters, seconds and Kilograms for the particular set of problems he intended to deal with in this lecture.. watch it again..

[Athanakin]

FALSE: The square root of 0.006 is NOT 0.002.

FACT: The square root of 0.006 is 0.077459666.

/Dwight mode off

[mufc4everch]

Yeah the students were kind of dead, I mean in my physics lectures the students are much more responsive

[KevinTheGod]

I like that he has this accent as a german I understand him perfect it seems that I have the same one

[Masuchievo]

@KevinTheGod Hes Dutch, and allot of Dutch people talk english that way.

[MarioNunesMachado]

this man has a weird accent... is he from Netherlands?

[C32347K17732]

Dimension analysis demonstrating with two falling apples...

My first lecture was about the atomic bomb. :P

[TheTimeTraveler100]

"Think of this as a small sacrifice for science."

HAHAHA THIS GUY IS HILARIOUS

[TheTimeTraveler100]

Love it.

[karlsruheprotestful]

But mammals have 4 legs so the pressure is not only one leg but divided by 4?!

[gtrescgh]

..I'm watching this (i'm not taking physics and I don't intend to) instead of playing Skyrim..What, what?!

[SsikG]

@gtrescgh LOL tell me about it, i study computer science and im watching this for fun when i could be playing on my ps3..hmm something is addicting about these MIT vids...perhaps its just the idea of free education we all love - ahh what a wonderful concept that would be if we could ever put into real life!

[Monk3ySee]

@gtrescgh Same here. Although I will be in an hour or so from now (playing Skyrim that is). :)

[gtrescgh]

@Monk3ySee

:\ My Xbox died the weekend Skyrim came out VIA RROD.

I'm scrapping all my games and getting a PS3 around Christmas time.

Sucks 'eh? At least i got a good 30 hours in. :]

[RockGTA]

@gtrescgh I could be playin Skyrim or Modern Warfare 3 now, but physics rules.

[SKAtarina420]

@gtrescgh same here!

[GoodyearBandit]

@gtrescgh play skyrim is better for you

[multibigpop]

And for that, you earn a little bit of my respect. That's not easy to do. Hats off to you.

[IHatePakis311]

@gtrescgh I was playing it awhile ago but i took an arrow to the knee ..ended my xbox session

[CaptainObvious0000]

@gtrescgh

me, too. not a big deal.

(btw i don't have skyrim)

[1borgus]

@gtrescgh if it wasnt for physics we wouldnt have SKYRIM...i love it too!!

[Maexle1234]

what a fucked up crowd o.O

[smagmauder]

@Maexle1234

Fucked up crowd? This is a University lecture, not a popconcert.

[Maexle1234]

@smagmauder yeah but why is he doing sarcasm and jokes then? ..

[smagmauder]

@Maexle1234

To make it more bearable. A lecture that consists purely of the curriculum will not captivate most, more likely deter them. Especially with something like physics, which, let's be honest, can be quite boring given the wrong teacher (guess that sort of counts for each course though).

[Maexle1234]

@smagmauder okay.

so could you please tell me where the hitch is to take this all 'a little less' serious as a student? Even more when the lecturor is inviting you to do so? At last it´s a lecture, not an exam.You and i know that pure severity is to come when it gets to review all stuff. well, to show to you what i meant and why you didn´t get my point of view the following video should be enough(not sure i heard some laughter?)

...m/watch?v=P4XZ-hMHNuc&featu­re=related

grts:)

[smagmauder]

@Maexle1234

I'm not completely sure what you're arguing in favor of. Are you saying it's okay to be lighthearted during lectures, but not during exams, or no lightheartedness at all? (I'd rather be sure what you mean than write a long response that has absolutely nothing to do with your argument hehe) By the way, I don't think it affects the seriousness or severity of the course, just the manner in which its presented.

[CheeksAndNuts]

@smagmauder Yea he did seem a little dry, and he moved way too fast.

[bbfan77]

I enjoyed this lecture ^^ even if it's not that complicated, it's a great introduction to Physics

[Mysaber9988]

I will study the physical

[mhead135]

hard but cool :D

[TheDawigginton]

Where can we see the omitted video in the beginning?

Just curious

[izytang]

@TheDawigginton

youtube/watch?v=0fKBhvDjuy0

[edmoed]

i can hear he's a dutchman

[takiola]

how did he draw those dotted lines at 11:58

[icygood101]

@takiola With the aid of frictional potential energy storing and bouncing the piece of chalk sliding on a small area edge back up to fall hitting the board in pulses... I think =P

[Matthew2400]

How did he do that thing on the whiteboard at 11:57? He drew the dotted lines so fast!

[sharkbarf1]

@Matthew2400 by angling the chalk perpendicular to to the board it doesn't have a smooth connection so it jumps along.

[seanSHRED87]

@Matthew2400

Technique.

[ak122version]

I HAVE A PHYSICS EXAM TOMORROW :(

[AngelGirlFromHell]

Nederland FTW ^^

[acknowledgeMYspellin]

Chalk = goose bumps.

[mindlabsunltd]

I am from Mexico, I never been in USA, is a privilege for me take a class in the MIT, the explanation is awesome, even I understand better in English than Spanish.

[Aaapke]

Why is he keep saying "mouth" instead of mouse...?

[BeylaKaythin]

@Aaapke Probably because he's Dutch? Dunno, noticed that too... (and YT got stuck at that point, so I heard him say "mouth" like ten times...)

[Matroos0611]

Het Europese navigatie-systeem is dus vernoemd naar deze Galileo die in dit filmpje wordt genoemd. Zo leer je nog is wat xD. Ik zou me iig nooit vervelen als ik les van deze meneer zou krijgen.

[LegendaryIanstein]

Is this in MIT?

[MrEmil20]

@LegendaryIanstein Yes it is.

[MoebiusTesla]

Nice refreshing course, reminds me of my physics teacher in the netherlands. Walter is fast and to the point. Excellent! btw anyone know if the american education system is slower or is this a refresh course. I learned and remembered these laws and theory when i was 13. Since MIT tuiotion is about 40000 dollar (not including housing and books even). A high price to pay for highschool education. Anyone know?

[JoshaHoudt]

@MoebiusTesla , it's the first lecture in a first year class. It will get more complicated.

[JoshaHoudt]

@JoshaHoudt , But actually i do have to agree. I was a first year studnet last year in the Netherlands, and although some of the basic stuff (dimensions, 'powers of ten') were dealt with in the first lecture, it did go faster. Measuring the student's height is a little silly in my opinion.

[thelegoplokoon]

Netherlands yay!

[1047762]

proud to be DUTCH !

[Daxster1995]

@1047762 hell yeah! 

[coperone2]

This guy reminds me of Walter, that puppet of Jeff Dunham when he said: "First lecture at MIT? Well, it's not mine".

[ThunderKid]

@PSV7200 - You'll figure out what type with effort and curiosity. Focus on watching these videos and understanding the material.

There are plenty of tips online and in college workshops for gaining acceptance to a school of preference, but nothing can prepare one for the intellect and endurance(!) needed to attend and succeed in these schools aside from self-guided effort.

Good luck.

[kberzok]

at 12:00... How does he do that dotted line so quick with the chalk?

[PSV7200]

hey guys, im a 13 year old boy, and when im big, i want to be an engineer (i dont know what type yet, maybe electrical and mechanical) , and I want to go to MIT for university, i really do. So guys, have you any tips for me please?

[bboybram]

@PSV7200

20 hours a week of studying

There are things you need to do and things you want to do.. Make sure the things you need to do are finished as fast as possible.. you never want that to slow you down.

You will get the feeling that you are working hard. While everybody else might be relaxing.I don't have the talent to study, I'm a slow learner and I should just stop. When that happens just keep going, after a while the universe will reward you.

Don't mind my english, its not my native

[0x28]

@bboybram Yes that is indeed correct. Our college stipulates that a norm student studies at least 60 hours per week. I myself has set up a scheme where I have no free time in my entire week + weekend except for short 15 minute breaks between study periods. A successful man is a committed man.

[bboybram]

@0x28

Accoring to youtube; you don't have a channel. Is it because of the 0x28? Are you into assambly language

[0x28]

@bboybram It is because I have chosen the option to hide my account (there is such an option in one's channel) because many people on the internet like to taunt others. So it is out of sheer self protection. I have chosen the nickname '0x28' because I always used to wonder what 0xYZ meant in bluescreens. Later, after learning number theory, I learned that they were hexadecimal references. Assembly seems interesting. I would say I like assembly, yes.

[twinzmmo]

@PSV7200 you should play soccer / football engineer is from ppl that eat at mcdonald xD

just kidding

[mikelh]

Wow he is such a good prof, I wish my profs were this good when I was learning this stuff. He is amazingly good

[felipe4ever08]

is he wearing socks with sandals? :@

[0x28]

@felipe4ever08 He's wearing intelligence.

[FakaMo]

@felipe4ever08 its a thing old dutch people do lol

[mjongerh]

@FakaMo not all the dutch people will do.

only the very old or the people who think they are old.

btw his lessons are the best of the world

[ScottOreily]

@felipe4ever08 Socks and sandals like a boss!

[BeylaKaythin]

@felipe4ever08 Lol, my physics teacher does the same...

tough he is not as good as Walter Lewin is...

[lsbrother]

@felipe4ever08 yes he is wearing socks with sandals - shoudn't he?

[ak122version]

@felipe4ever08 some things that we never knew about geniuses.............damn they keep all their techniques secret

[WestEdits]

@felipe4ever08 Yes he is. :P

[TheMagnatar]

@felipe4ever08 he left his shoes in your mothers house

[prantare]

@felipe4ever08

Very standard in Europe actually.

Almost all medical doctors in Sweden use that combination for example. :]

[MrMisharos]

@felipe4ever08 what's your problem?

[AlainNaigeon]

@felipe4ever08 Yes, and so do I - it can get painful if you don't

[Filipa1122]

@felipe4ever08 yeah just like my physics profesor -.-

[x2thezful]

@felipe4ever08 no full blown high skill mandals

[C32347K17732]

@felipe4ever08 yes I know more physicists who do that...

[speeron]

haha sandals and socks. this guy definatly knows what he is talking about

[madman58703]

im like only 15 wtf haha

[fazalabbas95070]

This is good intro to Physics.

[CrockpotCook]

Awesome

[ff7masta]

@Mdog2590 That is completely irrelevant. Do you think Newton knew that?

[gordo33]

I got about half way in and i was good.... then i kinda got lost.. lol. i guess im not so inteligent.. :( but i would like to know , when in life will i ever use this?

[whoarethebrainpigs]

@gordo33 tomorrow!!

[gordo33]

*I have a question ... Why is USA the only country to use Feet yards , pounds etc.. instead of meters and kilograms?

[VShalak]

@gordo33 Well, that was the system originally used by the British so ended up using it, too. The French later developed the metric system and spread across Europe during Napoleon's rule. It took Britain a long time to adopt the metric system, but unlike us in the U.S., they actually managed to do it successfully.

[TreeMuncher99]

MAFF

[johnnyray1717]

Good stuff

[xIRiiSHxSKiiLzXx]

Socks and sandals FTW! :P

[zecocolt]

gravity is a bitch....makes us shorter

[tshenvideos]

@zecocolt

At least it keeps everything at its place

[zecocolt]

@tshenvideos yeah that´s true

[dalebeerboy]

Can someone tell me if its true that learning off a black board is more effective because when you look at it your pupils become larger due to lack of light being reflected back at you because its black. This allows more information to be processed through the brain ?

[Dutchieboy20]

Kees Boeke! I'm at his school right now!

[Jiahao12]

i just got out of an 8am class.. why am i watching this.. lol.

he's a good teacher though! It's a shame this quality of education isn't available in all colleges.

[SuperFinGuy]

I am glad he wasn't my teacher, mass is not a fundamental quantity, it is a derived quantity, it is equal to L^3/T^2. The third fundamental quantity is energy.

[Dave67004]

@SuperFinGuy Energy's not fundamental. [Energy] = [M][L^2][T^-2].

[SuperFinGuy]

@Dave67004 I mean electromagnetic energy, of which mass is made of. What you posted is E=mv^2.

[ff7masta]

@SuperFinGuy You're wrong.

[SuperFinGuy]

@ff7masta Oh I am very right. It is easy to say "you're wrong", where do you think I'm wrong?

[ff7masta]

@SuperFinGuy Energy is not a fundamental quantity. We have mass.