1. Periodic Oscillations, Harmonic Oscillators

[@chrissharkey6056]

I love physics teachers that can't contain their love of physics

[@vib_di]

I really want to learn Physics, and this Content is Really Very Helpful and easy. Thank you MIT a lot, I hope that one day I'll be there at MIT and can thank all the Professors and Faculty and even students for offering this help to for free.

[@vivekkumarpandey9182]

He is really awesome teacher. Style of teaching is mind blowing .....I love to watch these lecture

[@berketozlu]

that Taylor expansion really expended my mind! Just Wow! How the non-linear part effects the movement...

[@unclefreddy2009]

MIT is just the best. Love these courses.

[@aishwaryas7044]

Totally agree with that!

[@Happyman-od7zp]

Me too!

[@samiru6521]

@@Happyman-od7zp yup. u r right. but i wouldnt understand this class without subtitles , hahaha. i think , our teacher is from china .

[@peterkovinski8476]

Not all. But this one is pretty good

[@amardeepjhala6922]

This is the most beautiful course I have found on oscillations and waves, beautiful mathematics there are so many things that I got to understand for the first time like why we always say find freq. Of small oscillators. Why do we use exponential functions . It was the best, thank you so much for this lecture.

[@tmo314]

This Professor has an amazing teaching style and attitude 😁

[@PhoenixMaster123]

this is why i love opencourseware, you get a whole uni degree without going to uni XD

[@BoZhaoengineering]

Invaluable resources. As a practicing engineer, this topic is not only must have but very interesting to learn. Superb

[@icatomitsah7149]

I love the way Prof. Yen-Jie Lee explains the topic. ;)

[@commodorekitty]

Watching this during the coronavirus pandemic. Thanks for posting the lecture videos!

[@7177YT]

He's got those quirky one-liners, I find very endearing lol. The didactic quality is very high too. well done!

[@TheRothmetal]

Some people rob banks, purchase share etc. to get rich, I am richening my brain watching MIT lectures

[@berketozlu]

Dinlediğim en kaliteli fizik derslerinden bu arada ya

[@boblingerbottom]

Ok kid

[@akhilanr1233]

i could spend the day watching these. I loved the lecture

[@mertkurttutan2877]

At 10.50, the subtitle is "Therefore, there will be no more force.". But, it should be "Therefore, there will be normal force." if I am not mistaken. In the following sentence, the same thing happens. I want to thank MIT for these courses.

[@Meow_yj]

The exponential function is so cool ! Very good explanation.

[@salihalbayrak-es8ky]

dude i've been watching 15+ years old physics and math lectures in 144p for a such long time that i forgot how 720p looked like

[@mohammedkarim8627]

thank you for the course , and the subtitles

[@jackdeago3639]

Thank you so much. MIT is the top of the world

[@LydellAaron]

Oh, man, this is Gold. Eq 40:40 had to sink in.

[@khalidhakimi93]

49:48 i have never seen such an amazed look like that haha, great teacher

[@muhammadadel2850]

thanks a lot MIT, very helpful lecture and discussed the uncleared information.

[@spiralofinspiration3653]

Love this man's energy

[@azizahkasim5267]

I always watch this kind of things and pretending that I can understand it

[@mentorman6285]

ha haaaaa - I'm dead Azizah

[@qubitcircuit5784]

It's not difficult to understand but it does have pre requisits , and it takes some time to rationalise the points being made

[@BoZhaoengineering]

Qubit Circuit agreed. Rationalize points from the math.

[@thanhdattran7046]

In my opinion at 28:50 the graph is not drawn correctly. Because the maximum velocity is at x = 0 instead of the smallest at x = 0. What is your opinion ?

[@MrUwU-dj7js]

You're right about velocity, but that graph is not Velocity vs X, but Potential Energy vs X

[@thanhdattran7046]

@@MrUwU-dj7js ok, thank you

[@AliAkbar-ii5jn]

Thank you MIT.

[@alexandergarcia6479]

if Re means the real part of the expression at 47:00 why you don't you name it just Acos(...)?

[@joshuaronisjr]

He does! That was the second way in which he wrote the equation!

[@lizhuo664]

This is wonderful!

[@puneetpst]

Brilliant lecture!

[@davidjuliang]

At 42:30, he said that x(t) = Re[A*cos(omega*t+phi) +i*f(t)], but this is the same as x(t) = A*cos(omega*t+phi) since Re[i*f(t)] is zero if f(t) is real. Therefore, the Re[x] vs Im[x] plot that he shows is wrong. I think he meant x(t) = A*cos(omega*t+phi) +i*f(t).

[@maunil108]

So awesome lecture. Very useful.

[@BikramPoddar7]

I don't understand why 2nd spring is used in the demonstration of horizontal motion of the mass?

[@amlanlmao]

essentially it constrains the block to move in a translational path, plus it increases the net force on the block.

[@joaocosta3506]

great lecturer, really good introduction to waves

[@firestix8492]

Anyone knows how frequent these lectures are in the actual course? Like how many times would students receive such a lecture per week

[@mitocw]

The class met 2 times per week for 1.5 hours per session; 27 sessions total for lectures. There were also recitations available and they met 2 times per week for 1 hour per session; 28 sessions total. For more info, see MIT OpenCourseWare at: ocw.mit.edu/courses/physics/8-03sc-physics-iii-vibrations-and-waves-fall-2016/instructor-insights/. Best wishes on you studies!

[@gracepancalstatela4422]

Thanks MIT. Great contribution to society!

[@asifiqbal3070]

Walter Lewin Vs Yen-Jie Lee ? Dont know who is the best !! Awesome !! Wish Other Unis do the same online open course !! . So that we can get to know more awesome professors .Binge Watching The same course several time at a regular interval (lets say every2 week or every 2 month) is sure helpful. But i found the courses more helpful if the same course is watched several times but with diff. instructor. Give it a try if you havent already (Assuming you have time ) : it helped me a lot especially in case of increasing learning efficiency.

[@maryamkhakbaz3316]

thanks a lot MIT

[@JimBobe]

@Kiran Sengal i disagree

[@nilberthsouza]

There were a few moments when I had some questions, but overall I was able to understand everything.

[@antoniosales3059]

thk u MIT and Professor... awsome.

[@AbirHossain-il3db]

Starting 12.12.24❤❤

[@cansomer6433]

Isn’t omega angular frequency and not velocity please tell if I’m wrong (probably yes I am).

[@adriadi4986]

Are you taking this course? If yes then please come to this group facebook.com/groups/1088712164828659/ so that we can discuss questions together. And omega is angular velocity which is also called angular frequency.

[@amlanlmao]

they mean the same thing

[@Dineshlr10]

Omega is symbol for angular velocity as well but the meaning differs angular velocity is change in angular displacement in two dimensional motion like circular motion but angular frequency is like no of times or oscillations the circular motion or for simplicating pendulum will have both angular velocity and angular frequency because it's is two dimensional motion and the action repeats that is angular frequency

[@junyangliu4812]

wonderful!

[@madhukeshwarad1973]

21:36 nice

[@iAbdullahHanif]

may i have Physics note including topics such as simple harmonic motion any any more i need notes from MIT

[@mitocw]

The notes and other materials from this course are available on MIT OpenCourseWare at: ocw.mit.edu/8-03SCF16. To see what MIT OCW has for physics, see the course finder at: ocw.mit.edu/courses/find-by-topic/#cat=science&subcat=physics. Best wishes on your studies!

[@theyasi]

Thank you!

[@steveying1305]

Very good video

[@Tito.Tuta3]

good job

[@royroyal1214]

awesome class i loved it

[@rounaksinha5309]

IS THE PHENOMENON OF PLASTIC LIMIT ALSO RELATED TO TAYLOR EXPANSION OF POLYNOMIAL V(X)?

[@physicspoint3356]

May God bless you sir

[@hadrianuslau9627]

10.58, whay friction force did not include in this diagram?

[@amlanlmao]

they considered an ideal environment without damping forces

[@victorgustavocardosoprata657]

That's really good

[@casedup]

what happened to physics I and II @MIT???

[@mitocw]

ocw.mit.edu/courses/8-01sc-classical-mechanics-fall-2016 ocw.mit.edu/courses/8-02-physics-ii-electricity-and-magnetism-spring-2007 Best wishes on your studies!

[@hendriaditjandra6418]

"to make my life easier" I died XD

[@darkpikachu_.]

Why aren't there any 8.02 videos?

[@mitocw]

They were removed from our channel. Here is why: news.mit.edu/2014/lewin-courses-removed-1208. We are currently working on a replacement.

[@newb_embedded040]

Do course 6 students at MIT take 8.03 ? Is it required ?

[@rung.warittha]

No, it is not required. For physics, every undergrad is required to take (or pass the exam of) 8.01 and 8.02

[@Amit1994-g9i]

The only flaw in this perfect lecture, 52:49, iykyk

[@adriadi4986]

Here is a group for discussion on this course: facebook.com/groups/1088712164828659/ please join so that we can learn together!

[@kevincaijiayi]

Very good!

[@nonhereticalmanofculture5401]

Why a is X initial and b is 0? Is b equal to X single dot?

[@amlanlmao]

sin(omega*0) is zero

[@obsidiantechz1371]

How to make surface frictionless?

[@MohdSFaiz-kd4uv]

Blow the surface with laminar flow of air as demonstrated in experiment

[@johnyeap7133]

underrated

[@saudmolaib2764]

It's good to watch at 1.5x speed!

[@Rgrazia1]

What about friction?

[@davidvalle3068]

Still using those premium chalks I see

[@williambradley835]

Second only to Walter Lewin. Great Lecture

[@SphereofTime]

3:04

[@scienceandphilo]

What will happen if we understand nature?

[@higgs_boson2231]

I love this guy, but Lewin is still number one.

[@swayamjha3988]

10:23

[@NujudMoha]

For which level is that course?

[@sing759]

undergraduate

[@Dineshlr10]

Every body try to be one state so to resist the change it is oscillating I think so

[@أحمدالمسلي]

I love

[@dhruvk9123]

is this covers the entire course from start to end ? what should I watch walter lewin course or this ? please answer

[@mitocw]

This course is complete, see ocw.mit.edu/8-03SCF16 for the course materials. Honestly, either series would work. While we no longer have the Water Lewin course materials available on our site, you should be able to find it elsewhere. Best wishes on your studies!

[@AimanDhai]

if youre here coz of you dont understand a thing in class welcome to the club

[@iitianakbfacultymaths8260]

Nice 👍👍 #IITianAKB_online_MATHS_BRAND

[@varunghanghas5588]

Fair enough😂😂

[@eigenliu]

Best and funny guys, hahahahahaha

[@gustavovera6982]

woooow

[@deanthurman4916]

I have seen Newton in a vision

[@pmemoli9299]

senpai

[@abzshaker]

i am just gonna pretend that i understood everything

[@mychannelofawesome]

everything is a harmonic oscillator

[@PawanSingh-ch5tm]

its little difficult to understand his english.

[@utkarshkapil]

481

[@mp3lwgm]

Not a substitute for Walter Lewin

[@ilsimi3599]

Not bad, but Lewin's lectures were better, sorry

[@vaster1142]

Math is ruining physics

[@deanthurman4916]

In the most respectfully manor I can create in a few sentences I would ask you nicely to eliminate the word ok from your vocabulary ok, it’s driving me nuts ok I could be I’m the only one this affect ok I may just be to critical after all this is a free course that I enjoy tremendously ok, but for some reason I find myself wanting to only listen to how many times you say ok, it’s quite a few. Sorry to use the ok so much in my request but I thought it might help get my point across , ok okie dokie

[@davidvalle3068]

Second

[@maddenturkey2376]

First!

[@robertbidochon4980]

Quite hard to follow due to the Chinese accent. Not as bad as Hong Liu, but still difficult to understand.

[@mitocw]

+Robert Bidochon All newer OCW videos have full captions that you can turn on if you're having trouble understanding the professor. Use the "English - CC" which should be the default, as the auto-generated version often have glaring mistakes. Good luck with your studies!

[@srinikethvelivela9877]

@@mitocw thanks mit 😊

[@dhomini1140]

fifith

[@窦泽华]

Omg his speaking is really...

[@TheBigBangggggg]

I prefer a lecturer with a better knowledge of the language. No US-citizen who can teach this stuff?

[@joerando385]

Or maybe what MIT is trying to show you is that it's possible to have good education that goes across language and cultural barriers. If you had troubling following the lecture it's probably not because the language.

[@srinikethvelivela9877]

Its because your not good at math

[@paulchen355]

I am guessing most ppl who have superier knowledge plus language skills are all gone to competitive industry.. Foreign professors are becoming the norm even in most top tier universities.

[@TheBigBangggggg]

@@joerando385 You are number 1 with a personal remark; people seem to like that. Dear o dear. But teaching is about transferring knowledge in the best way you can. This isn't the best way. Simple as that!

[@TheBigBangggggg]

@@srinikethvelivela9877 You are number 2 with a personal remark. Dear o dear. Well, you give a "fine" impression of yourself :-(