I love this guy! I would enroll in whichever college he is teaching at just to attend his lectures. Physics is not my thing, but he makes it so interesting I want to learn everything this man has to teach!
whmozart I was 43 years at MIT; I retired in 2009. I gave 2 lectures at MIT and 16 lectures in Japan and India (2012 and 2014) after my retirement. My "farewell lecture" at MIT (May 16, 2011) has is my mot popular lecture. It has been viewed 4.5 million times. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-sJG-rXBbmCc.html
I am doing Electrical Engineering, and I came here accidentally, but ended up watching one lecture after an other without getting bored.. Walter Lewin is a great teacher, and i'll buy his book some day.
As a an amateur violinist I found this really interesting. A violin teacher I had a few years didn't understand why I tuned to 440hz on the basis that orchestral stringed instruments resonate better at 442hz. I still tune my violin to 440hz to this day.
This is the way how physics (or any subject like that) should be taught... Love from India sir... Hope so every schools or institutes professor (or sir) starts explaining the things this way..
Watched this in 2016, 2017 and now 2018. Each time i watch it, I learn something new and enjoy the beauty of physics. Thank you sir :) I think I have an emotional resonance for you haha.
Maybe passion can’t be taught, but you can certainly teach with passion, thank you for sharing top quality content for free to everyone, you never know who can get inspired.
19:20 - you cannot hear these organ pipes with such a low frequency, but you can feel it with your body. If you have ever visited the real organ concert (not listen by TV or headphobes) then you will feel your body vibration at low sounds frequencies. This brings you to the fantastic feeling of the live organ music.
Professor I want to thank you for wonderful work and your upbeat spirit. I am lying here in a Covid-19 ward feeling rather down. Your infectious love of physics is the only disease I want to have and maintain. Thank you for your words helping me now.
Prof. Lewis’s infectious enthusiasm inspired me almost 2 decades ago to study physics after I finished my basic medical degree. I have only joy and satisfaction for doing so, no regrets. I’ve gone on to make some fundamental discoveries of my own in the theory of wave interference. Thankyou so much sir! Wish I had the chance to meet you in real life.
@@lecturesbywalterlewin.they9259 Thankyou sir for your reply. It’s such an honor! In case you are interested, the name of my paper is “multiple slit interference: a hyperbola based analysis” which can easily be found and downloaded on a google search. I was very blessed to have had such a great teacher as you. You are a rare gemstone.
Astonishing didactic quality, at the very highest level, very possibly unique! And this is no vulgarization: the reasoning is as rigorous as it needs to be, and the equations are introduced as the obvious language of Physics, not as a hindrance to be suffered. I think all Professor Lewin's students get to feel the esthetic emotion of practicing Physics and the joy of understanding the physical world. Superb teacher, in the highest sense of the word!
You are one of the most indispensable gem for the whole world. I admire you the most sir, your lecture and practical experiments simultaneously let us understand even the most toughest topic in an esy way. Hats off to you sir.
I could feel your passion to make others knowledgeable, sharing your life experiences in the subject that you love so much. Hats off to such Guru's. You made the session so interesting with those live demonstrations.
Sir you are amazing.........full concept..... Your lecture is like a Hollywood movie....... It gives the same pleasure to me when I watch a Hollywood movie......... Love from India..... Genius
I was reading the 1st chapter of "For the love of physics" and Walter said about how physics explains why and how many things are and do....and "why a flute makes sound" was on there......I'm gonna watch every bit of everything Professor Lewin.
What a great lecture and demonstration sit may Gid give u a long life u are the ver very great teacher of physics i learn many thing from u i salute u sir may God give along long life
I define 3 phenomena regarding self-excited vibrations: Natural Frequency, Critical Speed and Resonance. They are related but different. Natural Frequency is a physical property of any physical object dependent solely on the mass and rigidity of the object. Critical Speed is the turning speed of any rotating object that matches its natural frequency. Resonance is the extremely high amplitude response of an object that is being excited at its natural frequency or for a rotating shaft, at its criitical speed.
Hello professor!😊❤️ Now a days I'm reading your book 'for the love of physics'... It's very motivation and also informative. It gives & develop different approach of thinking... ❤️❤️
The last moment when he changes his voice was really amazing.You are the GOD of physics.I am in love with physics.May you live long,so that I can get an opportunity to meet you.🙏🙏🙏🙏🙏💕💕💝💝.LOTS OF LOVE FROM ONAM.
I like because he bring the experiments that influent student to study. As he said the unique instrument, you may observe from the waveform, time to change frequency, resonance and etc.
Great sir, This is your love with physics that makes you different from many others . I loved the way you teach and really i do wish if every institution give practicals more importance than the theory.. Salute you sir.. May you live long and healthy life and keep teaching us this way.. Thank you With regards, Piyush Awasthi, INDIA
please professor walter lewin, i have already attended your lectures from 8.01 and 8.02, i think the best classes i have ever seen in my life. I am Brazilian and do not understand English perfectly, and the 8.03 classes are not translated. I ask that if possible, you provide translations for 8.03. Thank you.
I'm studying the relation that exists among physics/math and music, for instance: a major chord which is audibly consonant is composed by the first three odd harmonics, thats: 1, 3 and 5. If 1 is C, then 3 would be G and five would be E, so you would have a C major chord (C+E+G). On the other hand if the frecuencies are obtained by dividing the fundamental frequency in integer numbers (instead of multiplying it, as in the example above), that's: 1/1, 1/3, 1/5. In this case if 1/1 is G, 1/3 would be C and 1/5 would be E flat, that's a C minor chord (C+Eb+G) which is also consonant. The interesting thing is that while mathematically this chords are inverse (the Major and the Minor), musically each one of them evoques a certain mood or feeling which, although music is subjective, could be generalized as oposite. In the one hand, a Major chord evokes a harm, happy, light sound, while a Minor chord evoques a cold, sad, dark sound.
Fascinating is Physics when explained by best Professor Walter Lewis. His demonstration with helium shows the extent to which he goes to fascinate is with physics.
Lectures by Walter Lewin. They will make you ♥ Physics. ru-vid.com/show-UCiEHVhv0SBMpP75JbzJShqw 300+ videos. Many of them with high resolution. This channel has all my lectures and talks.
Your luck will hold! At present (March 2016) my videos are being watched by more than half a million viewers each month. That's more than 6 million in a year!.
By the way, I believe finding a precise 440 hz A on the guitar was difficult because it is an equal temperament tuned instrument, rather than a just tuned instrument. As I expect you are aware, equal temperament is a system of tuning in which every pair of adjacent pitches is separated by the same interval, i.e., dividing the 12 chromatic notes into equal parts. This is close, but doesn’t quite match up with the natural harmonics, though it does allow the instrument to be played in all 12 keys. Tuning instruments to harmonic ratios is referred to as “just tuning”. Instruments tuned this way sound very good to the human ear, but only in the key that they are tuned. A violinist can adjust the finger position on any note to get to the best harmonics; a guitarist, who is bound by the position of the frets, cannot. Anyway, I think this might make an interesting side note in your next lecture on the subject.
Music does not need symmetric math. Noncommutative phase is the empirical truth of music, as Alain Connes points out. so if C is 1, octave 2 then G is 3 as overtone while F is 3 as undertone. So G=3=F at same time as noncommutative phase. Sir James Jeans points out that the infinite spiral of fifths is the empirical truth of music - this is because of noncommutative phase as quantum nonlocality - a geometric dimension of zero. So symmetric math does not capture the secret of music as human hearing is faster than Fourier Uncertainty. Nonwestern music knows the secret of music as infinite time-frequency resonance energy. de Broglie's Law of Phase Harmony also rediscovered this secret of music.
All I can say is you are the best professor that i had ever seen. I loved all your lectures and the most remarkable one will be your last lectures with pendulum experiment along with the scattering of lights , that was really awesome. You made me to be more in love in Physics as I have always been. Thank you !!!!!!
In April 1831, a brigade of soldiers marched in step across England's Broughton Suspension Bridge. According to accounts of the time, the bridge broke apart beneath the soldiers, throwing dozens of men into the water. After this happened, the British Army reportedly sent new orders: Soldiers crossing a long bridge must "break stride," or not march in unison, to stop such a situation from occurring again. Structures like bridges and buildings, although they appear to be solid and immovable, have a natural frequency of vibration within them. A force that's applied to an object at the same frequency as the object's natural frequency will amplify the vibration of the object in an occurrence called mechanical resonance.
Why RU-vid isn't recommending that sort of video and always pops stupid music video this is real knowledge I get more information from this video as compared to my entire School life and College life Thank you Sir love you
I was actually able to see a colour that humans aren't supposed to be able to see some time ago - it is sometimes called "yellowish blue", and it is a weird mix of yellow and blue that is very different from green - basically a yellow/blue mess where both colours are visible at the same time. You can see that colour by having blue and yellow next to each other and then have them converge with your eyes, kinda like when you look at "Magic Eye" pictures. There are several images like that on the Internet if you search for "yellowish blue".
Dr. Lewin , Thank youuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuYou are amazing You Wouldn't believe How much your lectures affected my passion to science Students at MIT are so lucky to have you there. I was always hoping having brilliant teacher at this unbelievable level of knowledge. MIT thank you for sharing this video , keep on