Although most of the students will have forgotten most of the physics after 10 years, i am sure that they will never forget your enthusiasm and you love to physics, your lectures have changed them in a fundamental way! If they take Physics, i'm sure they will remember every detail in your lectures forever! Thank you for your lecture Walter Lewin!
Thanks professor for providing best education through internet at free of cost. I live in rural area of India where condition of education is not good, i started educating myself through books and videos lectures , and your videos has made great contribution in my education. Next year I'll give SAT and hoping for getting into some prestigious University and one day I'll meet you.
Thank you very very much for making these spectacular lectures available on web for free..I am a great admirer of your lectures because those really help me to see beyond the equations..At the end you really have kept your commitment, you have changed my mind forever..Again thank you very very much..
Thank you for the lectures! I very much enjoyed your performances as I went through the course these past few months. I looked forward to sitting down and watching your lectures and then talking to all my friends about what I was learning. You have rekindled my feeling of childhood excitement for learning in a way I thought not possible before. That is a gift only the talented, passionate, and caring can give. Thank you again
I have never been so moved. Thanks to you and your lectures I fell in love with physics and I am really thankful to you for changing my life in a better way. I will always remember you when I look at the sky my dear professor.
The best lectures that I ever had and this is my second time to watch your lecture series. Thank you Prof. Lewin for taking us to the wonderful journey of Physics.
Your lecture content AND the presentation is enthralling like a thriller. Thank you for the free publishing including all the assignments and exams. I enjoy them very much!
Professor Lewin, Today I have completed my 8.02 by watching your lectures one after another and definitely learnt the basic concepts . Very brilliant effort. Thanks for keeping this lectures as open source for seeking knowledge. You will remain immortal through your lectures. Thank you.
Thank you, Professor Lewin, for everything ...your enthusiasm, your spectacular way of teaching, and countless other quirks your teaching mechanism brings. I find myself moving backwards in technology (embracing the vacuum tube rather than the transistor) and these lectures on classical aspects (if that is the best way of putting it) are indispensable. Thank you very much.
no sir actually that was a good cry... during my class 10th farewell last year i was super happy that finally i'm going to leave these boring teachers (you see i was since class 1 in that school) and study on my own....those teachers had punctured me from inside....so you plz dont say sorry because that little cry had got me a very good feeling....
OMG I feel so sorry to make you cry! Maybe you got emotional as this was my last lecture in 8.02 and the muses sang a song which they composed specially for me.
Thank you so much for these lectures Prof. Lewin. As a student in a rural high school with almost no opportunities, it gives me great pleasure to find excellent lectures like these. Words cannot express my gratitude for you.
Proffesor. I have had just finish watching this course lectures. They are incredible. Thank you very much for sharing this. I'm an almost graduate student in physics a nevertheless i have learned a lot, and I love your way of teaching with so many demonstrations. I hope one day be able to do something at least a little bit like this in my classes. Thanks again, i really really like them. Thanks.
just finished 8.02 and truly sir they are amazing lectures and so are you. sir u are undoubtedly the best physics teacher of the world and truly your lectures did make me fall in love with physics your lectures kept me glued to my desktop screen for hours......and yeah everytime there's a rainbow in the sky I without even thinking check those two things lol...... I would end this Thanksgiving of mine with a qoute "teachers affect eternity.. no one can tell where there influence stops"-Henry adams Thanks once again
Applaud Professor Walter Lewin!! I completed your web lectures!! I could understand Maxwell’s equations!! Understanding Maxwell had been my dream, because I did not have chance to study Physics while my student age. Thank you very much for this opportunity. From Japan.
Respected sir I wish if I could see you atleast once in my life and enjoy your live class. No words are enough to mention my gratitude to you sir. Such a wonderful lecture. One of the best teachers I have ever seen...... Keep going sir... Wish you will be there with us for ever in our journey of learning
Oh! I was also always there on 8.02 but on you tube. So i also completed 8.02 and i generally forgot Maxwell's equations . But my life is changed after 8.02 . Thank you ❤️
Great last lecture for 8.02. I wish you had been there for me in 1970. It's good to be able to have Maxwell's equations refreshed for me. I think one has a different perspective when you are 69 compared to 18. My professor didn't teach us about rainbows. I'm looking forward to watching 8.03, a course I never took. Thank you for spending those 60-80 hours per lecture to create this series. I do love physics.
I want to thank you for those amazing lectures! In the lectures in my university we didn't do even one experiment so the course had too much mathematics, but the way you lectured, with the experiment and the clear explanation was absolutely mind blowing,! I hope thaton day my university will adopt this way of teaching
Thank you prof. Lewin I'm very happy to see all of 8.02x. i will listen to another physics lecture. i couldn't even imagining how i would study physics at all before this lecture. you set my intellectual curiosity on fire.
Im taking my final in an hour. Thanks so much for maintaining this chanel, answering questions in the comments, and being the best physics professor that I know of.
Thank you professor for this amazing lectures, watching each and every one of them was a great pleasure for me! Now I can look to rainbows as well as the whole world in a different way. Thank you very much!!
Thank you sir, i am UG level student from India studying bsc and these lecture made me belive that great knowledge are available around you. I even hope MIT to help student like us to learn these great content at our home safely and enjoy new lectures of your new series ❤😄😃😊
These lectures hit different when you know you’re not going to have an exam on it while selling your soul for 30 years of debt you will likely never pay back.
mr Walter Lewin..js wanna make u know dt I love physics more than anything in dis universe...u are making this love stronger each passing breath..:) thnx a tonnes
SIR, YOU ARE AN AMAZING TEACHER AND ESPECIALLY AS A PHYSICS TEACHING TEACHER, YOU ARE SO CALM AND COMPOSE AND ALWAYS WITH A INNOVATIVE WAY OF TEACHING PHYSICS. SIR RESPECT DOESN'T MATTER AT WHAT DISTANCE COMES FROM, LOTS OF RESPECT FROM INDIA.
you 're an amazing teacher , you have such , like you have this power to keep things interesting throughtout , unlike my class where i would lose my attention after 5 minutes, sir have you watched amc's show 'breaking bad' its amazing masterpiece, in that show , the main protagonist's name is 'walter' too and hes a scientist , specialized in chemistry, its such an amazing story about that mans life , life he lives after he gets cancer at age 50 and decisions he make and how he explores the criminal world and how he transforms into a totally different man throughout the course of the show, pls watch it its amazing
Professor, greetings from India, I started learning from your lectures last year,as I was preparing for Indian engineering college entrance exam, JEE, it's has been a real great thing for me, thanks for uploading, and I am planning an education in physics, I recently completed the course of 8.02, going to attempt the tests in a few days, I am simultaneously learning 18.01 from ocw, I'd like to know, the math courses and pace I should take them to help me understand and master the subject, as I self study this, I am currently a 12th grade student.
Shankho Ghosh you should take a look at ocw site and see what courses you want to take. It shows what prerequisites you'll need for that particular course.
Professor Lewin, I just finished the whole series of 8.02 after finishing your whole series of 8.01 and will be starting your 8.03 series! I just want you to know that you're The Best Physics Educator Of All Time❣❣❣🥰!!!!!!!!!
Thank you professor for uploading your lectures here, you are an amazing teacher :) . I will never forget in my entire life the amazing experience I've had watching your lectures ,they've motivated me and opened my eyes and made me excited to learn more. Thank you professor for giving the world this 'experience' :D
Fantastic lecture, Doctor!! At any moment it seems to be taken from a George Orwell's or H.G.Wells's story. Congratulations and thank you for beeing this way!! I envy you...
I subscribe to all the kind words about you, Professor. Thank you for your work. At the same time I want to ask you a question. In my country, in universities the salary for teaching, lecturing is 10-20 times smaller than for research work. That is why lecturers are not keen on giving interesting "spectacular" lectures, I think. What is your own opinion about salary ratio?
You mentioned that in the X-ray emitting binary systems, one of the members can be a black hole. I had read that in our frame, we don't see infalling matter ever reach a black hole. If that is the case, then how would there be the hot-spots and x-ray emissions from a black hole binary?
>>>we don't see infalling matter ever reach a black hole>>> We do not see it go through the event horizon due to time dilation. But we will see X-rays which are emitted outside the event horizon.
Thank you for doing this enormously useful and interesting lecture! I'm from Uzbekistan, and thanks to your lectures I have a huge desire to learn more physics! Thanks once again cuz I won in our republic Olympiad! (3rd place) Could you please make some videos about solving tough problems for Olympiad?
You (3rd place winner) should make a video to solve problems for Olympiade. All I can offer are my 140+ problem solving videos on my channel. They are under 2 playlists (8.01 and 8.02) Help Sessions.
I am in a dilemma regarding my views on Von Braun. By the way professor, one day the whole world will know me for using Physics for the benefit of humanity.
Dear Sir, I have now watched each of your 8.01 and 8.02 lectures, and some of your 8.03 lectures. I have so many clear pictures in my mind because of you, I know how to begin contemplating phenomena from first principles...and I know what you mean by "see through the equations", because now when I solve problems and exams I am seeing through them, solving problems feels natural like breathing. Thank you! Do you have recommendations for lectures on more advanced topics, like electrodynamics, thermodynamics, or quantum mechanics? I like to learn for myself, if you have recommendations for any sort of book or course lecturer. Grateful to you for giving me this chance.
Sara thanks for your kind words. I strongly recommend that you now take my 8.03 course (23 lectures). That's much more advanced mathematically than both 8.01 and 8.02. Contact me again when you have finished 8.03. I will probably guide you then to Professor Barton Zwiebach'a 8.04 QM but that all depends on how well you do on 8.03.
i've watched all your lectures sir thanks so much this makes me love physics sir can u please guide me if want to do phd. in MIT what should i do? please help me
Lectures by Walter Lewin. They will make you ♥ Physics. I've searched some universities in germany i am interested in doing phd in astrophysics in astro particles like dark-martter or dark energy. May i do something in my life. Anyways thanks for your lectures sir
Germany does not have top Universities known for their expertise in astrophysics. However, Oxford and Cambridge would be great! www.timeshighereducation.com/world-university-rankings/2018/world-ranking#!/page/0/length/25/sort_by/rank/sort_order/asc/cols/stats
Final exam 8.02 question number 2 part i: Shouldn't the magnetic field be B=u0*I/2pia^2? The current density is uniform, so the penetrating current can't be zero as the solutions say. The current density is uniform, so the current passing through any point inside the inner wire should be (r^2/a^2)*I.
But how is I_pierce = 0. If the current is distributed evenly throughout the wire, shouldn't it be the fraction of the current that pierces the surface, (r^2/a^2)*I_pierce?
The currents run in the direction parallel to the axes of the cylinders. Thus the B-fields MUST be circular around the axes of reasons of symmetry. Use a flat surface with any radius < a around the inner axis, No current is penetrating that surface thus, according to Ampere's Law the B-field is zero. If you choose a flat surface with radius 2a centered on the inner axis, a current I is penetrating that surface. Thus the closed loop integral of B dot dl is then mu*I/2pi*2a. I arbitrarily chose the current in the inner cylinder +. I hope this helps.
yes he did much more for Hitler and for the US than I did and more than 20,000 slave laborers (mostly jews) died in Penemünde under his leadership. He was a war criminal. en.wikipedia.org/wiki/Wernher_von_Braun
Although most of the students will have forgotten most of the physics after 10 years, i am sure that they will never forget your enthusiasm and you love to physics, your lectures have changed them in a fundamental way! If they take Physics, i'm sure they will remember every detail in your lectures forever! Thank you for your lecture Walter Lewin!
thank you for your kind words
Thanks professor for providing best education through internet at free of cost.
I live in rural area of India where condition of education is not good, i started educating myself through books and videos lectures , and your videos has made great contribution in my education.
Next year I'll give SAT and hoping for getting into some prestigious University and one day I'll meet you.
Did you succeed
❤ Great job
The guy in the grey hoody waking up when everyone starts clapping at 49:00 is so good
Thank you very very much for making these spectacular lectures available on web for free..I am a great admirer of your lectures because those really help me to see beyond the equations..At the end you really have kept your commitment, you have changed my mind forever..Again thank you very very much..
Arnab Mallick You are very welcome!
Thank you for the lectures! I very much enjoyed your performances as I went through the course these past few months. I looked forward to sitting down and watching your lectures and then talking to all my friends about what I was learning.
You have rekindled my feeling of childhood excitement for learning in a way I thought not possible before. That is a gift only the talented, passionate, and caring can give.
Thank you again
Voltomeyer thank you for your very kind words
\\/\////////@lter
I have never been so moved. Thanks to you and your lectures I fell in love with physics and I am really thankful to you for changing my life in a better way. I will always remember you when I look at the sky my dear professor.
The best lectures that I ever had and this is my second time to watch your lecture series. Thank you Prof. Lewin for taking us to the wonderful journey of Physics.
thanks for your kind words
Your lecture content AND the presentation is enthralling like a thriller. Thank you for the free publishing including all the assignments and exams. I enjoy them very much!
WattSekunde Thanks for your kind words
\\/\////////@lter Lewin
Professor Lewin, Today I have completed my 8.02 by watching your lectures one after another and definitely learnt the basic concepts . Very brilliant effort. Thanks for keeping this lectures as open source for seeking knowledge. You will remain immortal through your lectures. Thank you.
Jasnoor, true sweet!, Mr. Lewin, you and Mr. Feynman have been my main mentors on how to teach!. God bless you all!
Thank you, Professor Lewin, for everything ...your enthusiasm, your spectacular way of teaching, and countless other quirks your teaching mechanism brings. I find myself moving backwards in technology (embracing the vacuum tube rather than the transistor) and these lectures on classical aspects (if that is the best way of putting it) are indispensable. Thank you very much.
:)
this lecture had got the very BEST EVER tears in my eyes....i dont know why?
no sir actually that was a good cry... during my class 10th farewell last year i was super happy that finally i'm going to leave these boring teachers (you see i was since class 1 in that school) and study on my own....those teachers had punctured me from inside....so you plz dont say sorry because that little cry had got me a very good feeling....
OMG I feel so sorry to make you cry! Maybe you got emotional as this was my last lecture in 8.02 and the muses sang a song which they composed specially for me.
yes sir ...frankly saying seeing your students sing for you ...i had this 1 second thought that you're going to leave us all.
:) :)
The day that I will leave you all will come - for sure. With some luck I hope that it will not be before 2025.
Thank you so much for these lectures Prof. Lewin. As a student in a rural high school with almost no opportunities, it gives me great pleasure to find excellent lectures like these. Words cannot express my gratitude for you.
This man is just awesome! We love you Walter!
+Johnny Frizz :) :) :)
Thank you dear professor Lewin. You have made difficult physics so attractive and easier for all of us!
Proffesor. I have had just finish watching this course lectures. They are incredible. Thank you very much for sharing this. I'm an almost graduate student in physics a nevertheless i have learned a lot, and I love your way of teaching with so many demonstrations. I hope one day be able to do something at least a little bit like this in my classes. Thanks again, i really really like them. Thanks.
Thanks for your kind words and god luck with your teaching!
It's true , that These lectures made us fall in love with physics.
Everything that you've done is of paramount importance in my life, thank you professor!
when lecture is going on, suddenly some energeitic girls entranced the room and start singing, that is so romantic and moving .
These girls telling you about the balloon don't they since it for space it required larger capacity and preparation.
yeah, at 32:10
35:57 "I have tears in my eyes"- c3po
best professor in the world🌍.No one can replace your teaching method, level and knowledge
Sir...
You are the best teacher I've found till today...
You are amazing sir...
Love you sir...
:)
just finished 8.02 and truly sir they are amazing lectures and so are you.
sir u are undoubtedly the best physics teacher of the world and truly your lectures did make me fall in love with physics
your lectures kept me glued to my desktop screen for hours......and yeah everytime there's a rainbow in the sky I without even thinking check those two things lol......
I would end this Thanksgiving of mine with a qoute
"teachers affect eternity.. no one can tell where there influence stops"-Henry adams
Thanks once again
Thanks Raghav for your very kind words.
Applaud Professor Walter Lewin!! I completed your web lectures!! I could understand Maxwell’s equations!!
Understanding Maxwell had been my dream, because I did not have chance to study Physics while my student age.
Thank you very much for this opportunity.
From Japan.
Respected sir I wish if I could see you atleast once in my life and enjoy your live class. No words are enough to mention my gratitude to you sir. Such a wonderful lecture. One of the best teachers I have ever seen...... Keep going sir... Wish you will be there with us for ever in our journey of learning
Oh! I was also always there on 8.02 but on you tube. So i also completed 8.02 and i generally forgot Maxwell's equations . But my life is changed after 8.02 . Thank you ❤️
Great last lecture for 8.02. I wish you had been there for me in 1970. It's good to be able to have Maxwell's equations refreshed for me. I think one has a different perspective when you are 69 compared to 18. My professor didn't teach us about rainbows. I'm looking forward to watching 8.03, a course I never took. Thank you for spending those 60-80 hours per lecture to create this series. I do love physics.
I want to thank you for those amazing lectures!
In the lectures in my university we didn't do even one experiment so the course had too much mathematics, but the way you lectured, with the experiment and the clear explanation was absolutely mind blowing,!
I hope thaton day my university will adopt this way of teaching
:)
Thank you prof. Lewin I'm very happy to see all of 8.02x. i will listen to another physics lecture. i couldn't even imagining how i would study physics at all before this lecture. you set my intellectual curiosity on fire.
You are welcome!
Thanks so much for your lectures. I’m still finding studying physics daunting but you make better. Very persuasive
x
The best physics lectures ever to be shared!
Thanks so much, for your best course, God blessing you Teacher.
:)
Im taking my final in an hour. Thanks so much for maintaining this chanel, answering questions in the comments, and being the best physics professor that I know of.
+Webb Telescope Thank you Webb. Good luck tomorrow!
Thanks walter for changing our lives
Thank you professor for this amazing lectures, watching each and every one of them was a great pleasure for me! Now I can look to rainbows as well as the whole world in a different way. Thank you very much!!
:)
Thank you for the 8.02, Professor! This was an AMAZING trip! And I will try hard to remember more than just nice facts about the rainbow!
Glad you enjoyed it!
Your' r the one of the best proffesor..i hv seen every lecture b4 14yrs.. 🇮🇳🇮🇳
Thank you sir, i am UG level student from India studying bsc and these lecture made me belive that great knowledge are available around you. I even hope MIT to help student like us to learn these great content at our home safely and enjoy new lectures of your new series ❤😄😃😊
These lectures hit different when you know you’re not going to have an exam on it while selling your soul for 30 years of debt you will likely never pay back.
mr Walter Lewin..js wanna make u know dt I love physics more than anything in dis universe...u are making this love stronger each passing breath..:)
thnx a tonnes
:)
Just finished all lectures and feel a better human! Thank you professor.
:)
Thanks professor... Such wonderful concepts.... I grew up by listening yours classes.....
my honourable professor u a really great oersonality of the century
:)
Breaking - "Balloon professor launched space probe to get closer to the stars"
:)
Physics is no longer a subject to me.....it is like my world..Thank you Walter Lewin Sir....
:)
Walter certainly deserves a Nobel prize in physics for his discovery of pulsating neutron stars.
SIR, YOU ARE AN AMAZING TEACHER AND ESPECIALLY AS A PHYSICS TEACHING TEACHER, YOU ARE SO CALM AND COMPOSE AND ALWAYS WITH A INNOVATIVE WAY OF TEACHING PHYSICS. SIR RESPECT DOESN'T MATTER AT WHAT DISTANCE COMES FROM, LOTS OF RESPECT FROM INDIA.
:)
The ending literally made me cry.
you 're an amazing teacher , you have such , like you have this power to keep things interesting throughtout , unlike my class where i would lose my attention after 5 minutes,
sir have you watched amc's show 'breaking bad' its amazing masterpiece, in that show , the main protagonist's name is 'walter' too and hes a scientist , specialized in chemistry, its such an amazing story about that mans life , life he lives after he gets cancer at age 50 and decisions he make and how he explores the criminal world and how he transforms into a totally different man throughout the course of the show, pls watch it its amazing
>>>have you watched amc's show 'breaking bad'>>>
NO
ok then you should watch it ! thanks for replying
You are the best professor, Walter! I'm going to see if I can buy your book. Is it in Argentina?
Sir I knew you. Really true Sir look exactly like our super sir in my school.
Just finished 8.02 after 8.01... 8.03 next...
It is nice to know how the things used to run inside MIT. Very nice this homage from the girls.
Sir you are the best teacher😊😊😊😊
Physics means walter levin and walter levin means physics to me
Thankyou sir
We love you sir! Thank you!
You said you build detectors and that reminded me you have studied at the TH of Delft technical Physics.
Professor, greetings from India, I started learning from your lectures last year,as I was preparing for Indian engineering college entrance exam, JEE, it's has been a real great thing for me, thanks for uploading, and I am planning an education in physics, I recently completed the course of 8.02, going to attempt the tests in a few days, I am simultaneously learning 18.01 from ocw, I'd like to know, the math courses and pace I should take them to help me understand and master the subject, as I self study this, I am currently a 12th grade student.
Thanks Shankho for your kind words. I am delighted that my lectures have helped you so much.
Shankho Ghosh you should take a look at ocw site and see what courses you want to take. It shows what prerequisites you'll need for that particular course.
its very useful for us.. as a physics student
Professor Lewin, I just finished the whole series of 8.02 after finishing your whole series of 8.01 and will be starting your 8.03 series!
I just want you to know that you're The Best Physics Educator Of All Time❣❣❣🥰!!!!!!!!!
Wonderful and moving.
Thank you professor for uploading your lectures here, you are an amazing teacher :) . I will never forget in my entire life the amazing experience I've had watching your lectures ,they've motivated me and opened my eyes and made me excited to learn more. Thank you professor for giving the world this 'experience' :D
+InventTwig I am delighted!
Fantastic lecture, Doctor!! At any moment it seems to be taken from a George Orwell's or H.G.Wells's story. Congratulations and thank you for beeing this way!! I envy you...
+Jordi GS Thank you Jordi.
Thanks for top class lectures.
Love from India professor
Completed 8.01and 8.02!:))
God blesses you!!
Very good. Thanks and Regards 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
Thank you sir. You were in our dreams too 😊
I subscribe to all the kind words about you, Professor. Thank you for your work. At the same time I want to ask you a question. In my country, in universities the salary for teaching, lecturing is 10-20 times smaller than for research work. That is why lecturers are not keen on giving interesting "spectacular" lectures, I think. What is your own opinion about salary ratio?
A born teacher is like an artist. It's something they HAVE TO DO even if it does not pay.
You mentioned that in the X-ray emitting binary systems, one of the members can be a black hole. I had read that in our frame, we don't see infalling matter ever reach a black hole. If that is the case, then how would there be the hot-spots and x-ray emissions from a black hole binary?
>>>we don't see infalling matter ever reach a black hole>>>
We do not see it go through the event horizon due to time dilation. But we will see X-rays which are emitted outside the event horizon.
Thank you for doing this enormously useful and interesting lecture! I'm from Uzbekistan, and thanks to your lectures I have a huge desire to learn more physics! Thanks once again cuz I won in our republic Olympiad! (3rd place) Could you please make some videos about solving tough problems for Olympiad?
You (3rd place winner) should make a video to solve problems for Olympiade. All I can offer are my 140+ problem solving videos on my channel. They are under 2 playlists (8.01 and 8.02) Help Sessions.
YOU ARE JUST AWESOME
I have tears in my eyes too 34:00
I love you sir soo much❤️❤️❤️
love you sir
I am in a dilemma regarding my views on Von Braun.
By the way professor, one day the whole world will know me for using Physics for the benefit of humanity.
The song was really nice sir...and you are looking like my grandfather sir 😍....and your teaching is awesome ☺
Dear Sir,
I have now watched each of your 8.01 and 8.02 lectures, and some of your 8.03 lectures. I have so many clear pictures in my mind because of you, I know how to begin contemplating phenomena from first principles...and I know what you mean by "see through the equations", because now when I solve problems and exams I am seeing through them, solving problems feels natural like breathing. Thank you! Do you have recommendations for lectures on more advanced topics, like electrodynamics, thermodynamics, or quantum mechanics? I like to learn for myself, if you have recommendations for any sort of book or course lecturer. Grateful to you for giving me this chance.
Sara thanks for your kind words. I strongly recommend that you now take my 8.03 course (23 lectures). That's much more advanced mathematically than both 8.01 and 8.02. Contact me again when you have finished 8.03. I will probably guide you then to Professor Barton Zwiebach'a 8.04 QM but that all depends on how well you do on 8.03.
Professor the solutions to the final exams are that of 8.03 :/
+Pierre Alletru Thank you. We will correct this.
\\/\////////
4/8/2020 finishing the 8.02 lectures for my second time. now i start for the first time 8.03 lectures.
8.03 is harder than 8.02
My respect
thank you
Thank you Dr. Lewin. Your generosity is overwhelming. raphael santore
:) :)
I came for the chicks. Stayed for the song.
Beautiful
my honourable respectd sir i face a problem to understanding special theory of relativity ...what is the significance of twins paradox
use google
love u sir from india
i've watched all your lectures sir thanks so much this makes me love physics sir can u please guide me if want to do phd. in MIT what should i do? please help me
I cannot guide you. To get a PhD at MIT read MIT's admission sites for grad school.
Lectures by Walter Lewin. They will make you ♥ Physics. Ok sir thanks
Lectures by Walter Lewin. They will make you ♥ Physics. I've searched some universities in germany i am interested in doing phd in astrophysics in astro particles like dark-martter or dark energy. May i do something in my life. Anyways thanks for your lectures sir
Germany does not have top Universities known for their expertise in astrophysics. However, Oxford and Cambridge would be great!
www.timeshighereducation.com/world-university-rankings/2018/world-ranking#!/page/0/length/25/sort_by/rank/sort_order/asc/cols/stats
yes sir your right but i can't afford money in those universities thats the main issue
I love you so much🌷💟
Goddamn legend
👍👍
Professor Lewin, I have something to show you that I've done. You might actually recognise it. 😀
Love from india
♥
Guy busy sleeping @48:07
Final exam 8.02 question number 2 part i: Shouldn't the magnetic field be B=u0*I/2pia^2? The current density is uniform, so the penetrating current can't be zero as the solutions say. The current density is uniform, so the current passing through any point inside the inner wire should be (r^2/a^2)*I.
which exam? I gave 3 exams.
The final exam. First part of the second question. Why is B = 0. I think it should be B=u0*I/2pia^2
read the solutions - Ampere's Law I_piercing surface = 0.
But how is I_pierce = 0. If the current is distributed evenly throughout the wire, shouldn't it be the fraction of the current that pierces the surface, (r^2/a^2)*I_pierce?
The currents run in the direction parallel to the axes of the cylinders.
Thus the B-fields MUST be circular around the axes of reasons of symmetry. Use a flat surface with any radius < a around the inner axis, No current is penetrating that surface thus, according to Ampere's Law the B-field is zero. If you choose a flat surface with radius 2a centered on the inner axis, a current I is penetrating that surface. Thus the closed loop integral of B dot dl is then mu*I/2pi*2a. I arbitrarily chose the current in the inner cylinder +.
I hope this helps.
31:08 .....
😁👯👯💐💐💐💐💐💐💐
That is because se see UFOs in the sky
The balloons
Your comments on Von Braun is stupid and out of context, nothing to do with your lecture. Von Braun was a genius and do more for USA than you ever did
yes he did much more for Hitler and for the US than I did and more than 20,000 slave laborers (mostly jews) died in Penemünde under his leadership. He was a war criminal. en.wikipedia.org/wiki/Wernher_von_Braun
should have stayed there, the women there are more you know wow.
their song was very moving