8.03 - Lect 1 - Periodic Phenomena, SHO, Complex Notation, Physical Pendulum 

I find it fascinating that this lecture was recorded when i was 3 months old, and here i am indluging in the same material for my course 19 years later. Timeless content professor!

I've moved soo far in engineering. I wish i spent my time with your video's earlier! I've spent days trying to understand the concepts which you've taught in 8.01, 8.02 and 8.03 which could have been shortened. Loved it! Will recommend every high school kid!

So glad I've stumbled upon these lectures. If only my lecturers were anywhere near as good as you, Professor, my engineering studies would me so much easier. Your passion is inspiring!

Never have I ever seen any teacher, teaching with this much of passion😭... By going through your lectures, anyone can fall in love with physics... Thank you sir for all your efforts❣️...

15 years later I thank you very much for this a lecture!!!! I hope you have a great life.

I so love such Teachers. Their passion is contagious. They are a Gift to Mankind.

THAT WAS ONE BRILLIANT LECTURE!!!!! I JUST CAN'T GET ENOUGH OF HIS LECTURES...

Apart from being informative, these lectures are quite fun to watch. Thank you for such pieces of art Professor Lewin!!

Damn Professor Nergis Mavalvala was in the audience she had no idea she will be part o the team that will discover Gravitational Waves twelve years later

Its pretty mesmerizing the way you teach sir... And also you teach every fact without missing anything. Thank you sir!!

No one is like you sir You made me love physics Huge respect from an Indian🇮🇳

Respected Sir Your lectures have let me explore physics in a beautifully different manner. Thank you for bringing out the aptitude for physics in me. Keep doing what you do; many students owe you.

I m not in high school and your abilities to make one understand are out standing that I get all of them so well!

sir, you just enabled me to understand how nature and physics are so intimately linked . i am from india and i want to become the greatest physicist and make my country proud. thank you

Waaoo Sir.. "Aaaa man point one five" and body language....lovely

These badges on your shirt different in every video are just lovely especially that egg one!

I have written something before " Oscillation in relation is okay but frequency of that should be moderate ". During the lecture I thought that this is something which is matching here. Thanks sir for your efforts always. I can feel physics more because of you. love you. :)

wow, well Dr Lewin... I've seen about 90 % of your 801 and 802 videos... and now I've started with your 803 lectures.. I have to tell you... I really enjoy ALL your videos.. they are all Good!!.. but what I really need to tell you is that THIS video is the BEST I have seen!!.. From beginning to end you have scripted the video PERFECTLY.. your chalkboard execution, your Demonstrations, your Interaction with the Students.. ALL OF IT was a Perfect Lecture Video!!!.. THANK YOU!!.. I found myself pausing the video and taking NOTES and doing calculations. I was totally involved as if I were a Student sitting in your lecture hall.... Congrats!!..

Dear Sir , its the best lecture I have ever had . I wish I could have taken it earlier . ❤ you Sir .

Thank you for your lectures. MIT lectures with you that is excellent to understand physics to demonstrate phenomenon.

Really professor, you gave a five minutes break in an 85 min lecture. In my high school days, my physics teacher lectured SHM ( it was the same topic in the video and little bit more) for more than 6 hours. *YES YES YES YES WITHOUT ANY BREAK*. I almost died on that day

Great great great no words to appreciate my aim is to become even 1% like you.

It's like I am addicting to watch your lectures, from 8.01, to 8.02x, and now 8.03... You saved me from the bland and bored lectures by my phy prof..!!!

The greatest Physics professor in the world! 👍

I wonder how much patience you have to answer all the questions we ask

Dangerous lecture to watch with your headphones on xD :P

Thank you Professor Lewin!!!

sir todaye I firstly took your lecture. I realiz that there is no one in india who can teach like you. I will teach students like you sir thank you

Sir what an excellent lecture delivered by you!!!! Love from BITS PILANI, INDIA

I wish there was enough lectures by Walter to last me a life time

Professor you lectures are super exciting. Big up.

professor of the century !!!!!!!!!!!

You are truly amazing..❤️

I love you sir from pakistan...you devote your whole life for physicss

Thank you very much, great lecture! In the pendulum experiment you’ve predicted time 20.17+-0.2s and got 20.52+-0.15s. If we take the first time with the higher bound and the second time with the lower one, we get 20.37s in both cases, so can we say that the outcome was actually within the bounds of the prediction and that the friction wasn’t the problem?

One of my main reasons why I want to study at MIT,the professors’ teaching are simple,easy to understand and interesting.Maybe one day I hope I will be able to join Master program at MIT.

Physics is experiments!!!!! but the way we're learning it in school it's just. .. Thank you so much sirr it helped a lott to understand the concept 🙏🙏🙏🙏

I m doing the chapter on oscillations. This lecture trigged my imagination.

Professor Lewin I hope you are doing well. I've been busy working (and trying to breath). Someday I'll be able to revisit your classes again.

Brillian lecture.

I wish I had a teacher like you

sir. you are greatest a physic teacher who i ever see. your explanation is beyond of equation. are there next series 8.04?

32:30 trick question haha 😆 Amazing lecture!

I am understanding him little because I am Indian guy and here english is not spoken in such flow but physics practicle Really amaze me ..... I try to write my word in English so you all my English guy 👦 understand....may my words are proper 😇

This is amazing

Very informative and excellent lecture . Thanks to you lewin sir

Life would have been so simpler if he would have been my instructor🌸🌸

You are physics legend ❤

About the heat problem. Is it because length gets bigger when heated?

Is it possible to speed up the ball by the energy of falling and using gravity to return to the place because of the acceleration, thank you

Thank you sir for your help

Hello! I'm a current MIT student and love your lectures! I was able to ASE 8.01 because of them! For that, thank you so much. In fact, I'm considering taking the 8.03 ASE. Do you think the 8.03 curriculum has changed much since you've taught it?

This is absolutely gorgeous and mesmerizing lecture

Thank you dear prof! you are such a good prof, AMAZING!

And for having water in less than 17 second just make one outlet half the size of other so that at bottle intersection there is a gap also at the base of vertically held bottle make a hold and volla we have filling at a much accelerate rate

If you notice the equation, we can generate gravity force in the circle shape like in the movie if we had enough radius and orbit velocity. # For signaling sometime we use inband, outband signal then for some telephone application need to add keypad sound. Or some ppl may have an extra wide frequency range or driving.

What an honor it must’ve been to be a student of Walter Lewin. Like watching Michael Jordan teach kids how to shoot basketball. Thank you for your contribution to physics.

Sometimes periodicity makes me wander around the realm of so-called reincarnation of organisms. To my limited knowledge, substances can cycle, regenerate, and combine again to some complexity, except for energy. What if the soul is something like energy? Does that imply the non-periodicity of soul and incompleteness of reincarnation? Enough wandering, it is time back to the series of lectures of vibration and wave!

Good... understable about periodic motion...

Love from India sir. 🙏🙏🙏🙏🙏🙏🙏

Please tell me in which lecture the acceleration overcomes gravity,the example of a ball gaining speed due to the attraction of the earth?

In 8.03. do you also use book "Physics" by Ohanian? I managed to get a pdf version of a book called 'Physics for scientists and engineers,9th edition' from Serway,Jewett and it seems like a very nice book and plus it's very similiar to your lectures.

Hello sir can you please explain why does flag perform wave motion , what is the necessary restoring force on it in case of steady winds. I have been thinking about that for so long now . It was at 7:08

rofessor, are there any lectures that explain the mechanics of waves? Topics like particle velocity, string wave speed, transverse waves on a string, etc.? Please point me to those, since I heavily rely upon your incredible lectures for my interest in physics.😁

prof i wanted to ask that can we hear the same frequency from the video as you heard phyiscally in the classroom?

Sir, If we try to draw the graph for y=a sin^2 (wt) then we will get same graph as sine curve but it is shifted above the x-axis.so that object will oscillate between x=0 to x=a with mean position at x=a/2 and it's time period will be half. So this condition is same as that of SHM with shifted mean position. So why can't we consider it as SHM?

Sir,when i was reading a book on physics by resnick and halliday it was mentioned that the velocity of the particle at equilibrium is the highest when it is undergoing a SHO. But there was no explanation on why is it so.Could you please tell me why?

Professor, if we are not doing anything then is it periodic. I mean to say that the graph of our moyion is Y=0 Where x axis represents time and y represents displacement

Thanks sit Love from india

Excellent lecture Sir. Thanks 🙏🙏🙏🙏

What is most fascinating thing in physics that is not in any other subjects

Sir, Is the period of oscillation a function of initial angular displacement in case of large oscillations (>20deg) in simple pendulum?

how does he calculate the error in the Hoop predection?

What if the mass of spring is not so small or also almost equal to the mass hanging ?

Bravo!

I have a explanation for the heated cylinder phenomenon and its i say similar to the bottle with water phenomenon and the hot gases tend to come out of the cylinder but at the same time cold gases neeed to go in and that happend in a way similar to the bottle experiment and due to this the air gets a wave like motion giving us the sound of I'm wrong I would be happy if someone could correct me

thank you so much

Professor, what was it that you aid was on the pipe at 48:51? Couldn't hear it properly. Was it "grid"? But what is meant by a grid? Also, did anyone come up with an explanation for the pipe producing 110 Hz just by heating and cooling?

At 30:31, why did you multiply the error for your reaction time with square root of 2? Isn't your reaction time independent of the mass of the object ?

Professor Walter, After taking 8.01, 8.02, 8.03, i'm considering taking 8.04 & 8.05 but i don't know which courses should i take after those. i saw 8.286 "The Early universe" in MIT OCW, & saw 8.421+8.422 (Atomic and Optical Physics I,II), also saw 8.333+8.334 (Statistical Mechanics I,II). I noticed that 8.333+8.334 & 8.421+8.422 are Graduate courses not undergraduate so i was wondering if you can suggest me what to see next? Thanks in advance, btw i enjoyed your courses alot

@7:52 ☆Love is a periodic motion☆ Great example 😍😍😂😂

Professor, At 17:00, are you trying to say that x0=xcost(wt+phi)? but wrote it as xcos(wt+phi)?

Sir at 1:12:42, the mass at P is not equal to the mass of the whole ring. but why is it taken that way??

I wish I could get the opportunity to enter into MIT and explore physics.In my school I use to hate physics but after your lectures.I am inspired to become a physics teacher.🙏🏿With deepest gratitude.🙏🏿

Professor Lewin, i Wonder if there's any subtitles available. Thanks for all the great work!

Love you sir

Professor, how can we find the time period of a spring system oscillating like a simple pendulum. I mean like a simple pendulum is made to oscillate by displacing it by a angle *theta* .There is a spring in place of a string.

hello sir I'm a new physics teacher from morroco, your lectures are really helpful for me and I want , if it's possible, the handout of 8 01, 8 02 and 8 03 in order to complete understanding of the lectures thank you sir for your creativity

Why does the long red pole pole produces sound when you heat it from the bottom? I have an answer.. It may be wrong but did the mesh absorb the heat and after you removed the flame,started to vibrate at the resonant frequency of the pole,and the pole picked up that frequency and produced that sound.

so more the mass of the spring lesser becomes the time period of the spring . Can we make the time period of a giant spring same for both heavier m1 and lighter m2 ?

Sir I love you 😘😘😘😘😘😘😘

nice lectures

Sir is there way to measure the value of force without using netwon law

When I born then on that time he was recording lecture

Sir when we measure any quantity Q throught a tool or measiring instrument. Sir how we will find out the error in this measurements.

Sir If a light bulb blinks every 1 sec can we say that it is oscillating with 1 oscillation per second

theta double dot - I like it!

Professor, why in your simple harmonic oscillation there is no diffrents between cos and sin? In my books there is sin but you have written there cos and im really confused now.

Happy Teacher's Day from India.

Thank you kindly ✍️