It’s good to know you’re well. Who wouldn’t adore you. I’m glad all is well
@positive1061Күн бұрын
Professor, why do we ignore atmospheric pressure when explaining hydraulic lift? (While saying the force acting on the piston of larger area)
@lecturesbywalterlewin.they9259Күн бұрын
your body does not experience atm pressure as that pressure is also inside your body. Thus if you go 10 m onder water your body only experiences the hydraulic presssure
@positive106123 сағат бұрын
@@lecturesbywalterlewin.they9259 Sorry, I mean while calculating the force acting on the car , we're not considering the atmospheric pressure (hydraulic lift diagram) F1/A1= F2/A2 F2= F1A2/A1 Here F2 doesn't include the initial pressure before pressing the piston of smaller area.. Maybe I am wrong.
@lecturesbywalterlewin.they925923 сағат бұрын
@@positive1061 when your car is not moving the atm pressure inside is the same as outside. However, when your car is driving 50 mph then the car will experience a wind (opposing its motion) of 50 mph. If you need more information use google
@MusaShah-qh5jrКүн бұрын
Thanks sir 🇵🇰🇵🇰🇵🇰
@daniellee302Күн бұрын
The answer is Sonia Delaunay,1913
@ayushmansharma-lp8teКүн бұрын
Which observer is used to observe an electron during electron interference experiment.
@lecturesbywalterlewin.they9259Күн бұрын
question is ill-defined
@ayushmansharma-lp8teКүн бұрын
Which observer is used during double slit Experiment to observe an electron??
@lecturesbywalterlewin.they9259Күн бұрын
@@ayushmansharma-lp8te electron pattern is visible on a screen - kzbin.info/www/bejne/kKK2aX2goNBkfqs
@ayushmansharma-lp8teКүн бұрын
@@lecturesbywalterlewin.they9259 no sir when electron passes from slit a electron observer is placed near the slit . Who observe a electron when it passes from slit . What is that observer ?
@lecturesbywalterlewin.they9259Күн бұрын
@@ayushmansharma-lp8te if you determine through which slit the light photon or the elctron moved (and that is possible) then the interference pattern does not show. That's the magic of quantum mechanics. Use goolge
@ArashVenusКүн бұрын
Good day to you Dr. Lewin, lots of love here from Canada <3
@ArashVenusКүн бұрын
+ MIT > Stanford
@daniellee302Күн бұрын
Hi, DOC!!
@kiyotakaayanokoji4267Күн бұрын
How can u make Physics more likable When it comes to ray and wave optics I find it hard to visualise and I can't solve the problems based on those 😢
@lecturesbywalterlewin.they9259Күн бұрын
eat yogurt every day but *never on Fridays* that also worked well for Einstein and for me.
@positive106123 сағат бұрын
Ray optics is not that hard. I suggest you to learn the chapter Waves before Wave optics.
@NorthMavericks-ow7jkКүн бұрын
Professor Walter Lewin- The GOAT in Physics.
@PosyDanialКүн бұрын
The wealth of knowledge here is staggering. It's like having access to a virtual library of expertise.🍒
@dariusmarcuart1682Күн бұрын
Planul inclinat ati filmat un video?
@cosmic1426Күн бұрын
He risked his life for physics
@dattatreyasharma9627Күн бұрын
Sqrt(2) is 1.414 how do you get the uncertainty .002 ..kindly consider the equation for sqrt(h1/h2).
@lecturesbywalterlewin.they9259Күн бұрын
if the uncertanty in x is 4% then the uncertanty in sqrt x is 2 % - simple math
@PhoenixX6T4Күн бұрын
I don't understand that why near blue electric potential is 0 (24:30)
@lecturesbywalterlewin.they9259Күн бұрын
brush up on meaning of electrti potential and watch the video again
@PhoenixX6T4Күн бұрын
YES sir u were right actually I was confused between electric potential and energy (U and V)
@MDShohag-pf8gtКүн бұрын
❤🎉very very beautiful class
@aprilbrandon3441Күн бұрын
“2:48 then this will be my last lecture” PHYSICS WORKS
@ghostdance56Күн бұрын
He might know it, but will his students EVER know it is the question.
@sandeeppatidar1106Күн бұрын
Thanks professor
@lecturesbywalterlewin.they9259Күн бұрын
You are welcome
@TheDRShowКүн бұрын
Sir I've watched your all mentioned lectures , i am very much grateful to you , they've consumed a lot of time , energy and also phone's battery too... But now it all ends well... Thank you
@lecturesbywalterlewin.they9259Күн бұрын
It's my pleasure
@SanjeevKumar-ef8ztКүн бұрын
Jee aspirai
@SanjeevKumar-ef8ztКүн бұрын
Columbus
@SanjeevKumar-ef8ztКүн бұрын
Repusion & attraction
@sishuchoudharyКүн бұрын
i am from india and iam seeing a lecture of walter lewin i greatly love this because he clear concepts practically. he was best teacher
@FocusedjashКүн бұрын
What about maths and chemistry sir 😂😂😂❤
@lecturesbywalterlewin.they9259Күн бұрын
my comment is meant to be only for Physics
@realitymoments95Күн бұрын
Very nice explanation 😊, but nothing compares to you ❤
@lecturesbywalterlewin.they9259Күн бұрын
Glad you think so!
@inderbirkaur8973Күн бұрын
❤
@dark3l192Күн бұрын
what actually a charge is?
@exactempire7854Күн бұрын
Sir, what book do you use in your 8.01 lectures and what book do you recommend for classical mechanics
@lecturesbywalterlewin.they9259Күн бұрын
8.01 Physics Hans C. Ohanian Physics Volume 1 2nd edition W.W. Norton & Company ISBN 0-393-95748-9 8.02 Physics for Scientists & Engineers by Douglas C. Giancoli. Prentice Hall Third Edition ISBN 0-13-021517-18 8.03 Vibrations and Waves by Anthony French CRC Press ISBN 9780748744473 8.03 Electromagnetic Vibrations, Waves and Radiation by Bekefi and Barrett. The MIT Press ISBN 0-262-52047-8
@exactempire7854Күн бұрын
@@lecturesbywalterlewin.they9259 thx sir. But I intend to buy a dedicated calssical mechanics book that will serve me also in grad school and I'm eager to know you recommendation.
@exactempire7854Күн бұрын
@@lecturesbywalterlewin.they9259 thx sir. But I wanna buy a dedicated classical mechanics book and I'm eager to know your recommendation.
@lecturesbywalterlewin.they9259Күн бұрын
@@exactempire7854 I cannot advise you as I do not know you. Ask your teachers - consider the 3 books with Feynman Lectures.
@exactempire7854Күн бұрын
@@lecturesbywalterlewin.they9259 thank you very much sir.
@amarlalsaw92432 күн бұрын
Suppose there is a spacecraft travelling with the speed of light ,now at that time its mass and also energy required to move it will become infinite.So according to Einstein's special theory of relativity [e=mc²],which tells us that mass and energy are both interchangeable,so if I change the mass of spacecraft travelling with the speed of light into energy that is then used to fuel it. -If I apply this concept then is it move with superluminal speed? Please tell me Love you Walter levin sir❤
@lecturesbywalterlewin.they92592 күн бұрын
according to Einstein's Theory of SR, nothing that has rest mass can move with the speed of light. Light itself has no restmass (but it has momentum p, and Energy E, E=pc) photons therfore must move with the speed of light.
@amarlalsaw7220Күн бұрын
Thanks for your answer but i have other doubt that sir you are telling that light also possess mass so how could it move with the speed of 3 lakh km/h.
@lecturesbywalterlewin.they9259Күн бұрын
@@amarlalsaw7220 <<<you are telling that light also possess mass>>>> *NOOOOOOOO I did not write that. Light has enery and momentum* *but no rest mass*
@akashverma57562 күн бұрын
Critically damped oscillation under eddy current effect.
@KishanLovesAstro2 күн бұрын
Sir would you like to join a interview with me for about 10 minutes for a youtube video . Sir I wanna do this if ok can tell me ok if you can't it's ok sir.
@lecturesbywalterlewin.they92592 күн бұрын
thank you but I am not interested
@KishanLovesAstro2 күн бұрын
@@lecturesbywalterlewin.they9259 sir not a physical interview a zoom interview.
@lecturesbywalterlewin.they92592 күн бұрын
@@KishanLovesAstro I am not interested
@KishanLovesAstroКүн бұрын
@@lecturesbywalterlewin.they9259 Ok sir Anyway I respect you so much.
@michaelyounger44972 күн бұрын
I used to get my students with perssure of pounds per square inch..my demonstration was a bed of nails I would lay down on..slightly dulled. The apple always got spiked first when dropped on it
@sandeeppatidar11062 күн бұрын
Great explanation professor
@Sachinff-vu8fz2 күн бұрын
Who are watching in 2024
@mukeshraj.s73252 күн бұрын
I am an Indian,i am studying High school class12,and i am watching 5his lecture for my exam tomorrow.Thanks a lot sir.
@digita1dope3 күн бұрын
As far as I understand there have been debates on this topic for hundreds of years. I heard this question for the first time more than 10 years ago and since then I didn’t knew who to believe. All the experiments I saw were not convincing enough and I've began to think that perhaps this was just nonsense. I really liked your explanation. It’s still very difficult to imagine what exactly charge, voltage, current and resistance are, but the further, the closer my understanding to reality. Thank you very much for the enlightenment!
@TheRealPinkWish3 күн бұрын
good stuff so far!
@lecturesbywalterlewin.they92593 күн бұрын
Glad to hear it!
@JackiyYaykiy3 күн бұрын
Hello professor. My name is Jack. Your videos are wonderful, I love them. Keep posting them please :) I have sent you a book recently. Have you received it?
@lecturesbywalterlewin.they92593 күн бұрын
Yes, I received a book Madonna in a fur coat. Thanks alottttt very kind of you. \\/\///////
@sandeeppatidar11063 күн бұрын
Best lectures
@sandeeppatidar11063 күн бұрын
Great lecture
@ggxsky48113 күн бұрын
Can i do this playlist before 8.04
@sagarpatel30433 күн бұрын
Thank you professor for teaching us.❤❤❤ I have been following all your old lectures, wishing someday I will be teaching with so much enthusiasm like you.😊
@lecturesbywalterlewin.they92593 күн бұрын
You are very welcome
@omkar_thite3 күн бұрын
Planets revolve due to space time but still follow newton's theory. Two different perspectives but both produce same results (equations)? I'm no expert but are both theories connected?
@lecturesbywalterlewin.they92593 күн бұрын
Einstein's theory explained a famous observation that Newtonian gravity could not: a subtlety in the orbit of the planet Mercury. And his equations implied further slight deviations from Newtonian calculations.
@basically-ky2rp4 күн бұрын
Sir I have a question - A nonconducting sheet of large surface area and thickness d contains uniform charge distribution of density p. Find the electric field at a point P inside the plate, at a distance x from the central plane.[ from prof. Verma's book] Two answers are coming when I choose Gaussian surface as vertical cyclinder I get px/2E° And when I choose Gaussian surface as horizontal cylinder I get px/E° Please help me to solve this problem [sorry for grammatical errors]