Dr Lewin you are the gift that keeps giving. This clarification is a powerful testament to your commitment to teaching excellence. Thank you, Sir, for your lifetime devotion to the fine art of teaching.
Dr Lewin, your passion and energy is like MCC too. Your teaching has not lost a proton or neutron either and you are leaving a legacy brighter than stars. And so I wonder...are there any laws of physics that can be broken?
According to our current understanding, no, the laws of physics cannot be "broken" in the sense of being violated; however, if an observation appears to contradict a known law, it would simply mean that the law needs to be refined or expanded to account for new phenomena, essentially revealing a more complete picture of physics. Einstein's 2 theories are examples pof that.
Sir i was not a good student in concept's of physics but i reversed my sentence after watching your lectures! Thank You Sir Walter Handrik Lewin. ●My dream is to be a lecturer like you in Netherland or Canada. Love u from Pakistan! 🇵🇰
Professor, I've learnt to apply the faraday's law thanks to you! I've been watching many of your lectures at MIT on RUclips! THANK YOU SO MUCH FOR EVERYTHING YOU DONE AS A PROFESSOR
Hello ❤❤ Dear professor Lewin 🎉🎉 I hope you good Sir I am UPSC spirant from India Sir you are amazing person in the world Sir 🎉 please give me some advice for my preparation........😊 I am so poor in English but i try to send for you message please sir tell me something about my preparation You are my great ideal teacher.......so thankyou sir 🎉🎉 Sir i watch your old video and new video it's very interesting and very important...... Thankyou being you ❤ Take care dear Walter Lewin ..... I pray to God that you live long 🎉🎉 I also hope that,I can find something like you in my life 😊😊........ You are my impression 💞 💞 love u sir 💝 💝 ......... ...... .... ... .. .. . ❤
Hello Prof. Lewin, You are a great educator and a researcher yourself. Do you have any tips on how to understand and study better like you ?? because you understand physics in huge levels....
I have a theory that I want to study more in the future. It is that time is an imaginary number. t= i -1 -i 1 also maybe space and mass might be able to have negative values. I tried to make my own math theory when I came to the conclusion that 1+1 is not the same as 2. Just wanted to share my thoughts! :)
So a fiction bomb is not really converting matter to energy, it is releasing the energy stored in the bonds that keeps the proton and neutron together.
This is a matter of semantics. The increase of binding energy results in mass loss. The mass loss of the U235 bomb on Hiroshma was 1 gram. mc^2 (m=0.001 kg) killed 2000 thousand people and destroyd the town. The number of protons and neutrons before fission/fusion is the same as after.
Greetings sir, I’m preparing for competitive exams and would love your advice on how to study consistently and build an effective routine. Any tips on staying focused and making the most of my study time, would be greatly appreciated.
when you put U235 on a scale before fission and when you place all parts after fission on the scale you have lost 1 gram (Hiroshima). Einstein: ΔE=Δm*c^2 ΔE is the heat produced during the explosion due to mass loss Δm.
@lecturesbywalterlewin.they9259 that's Walter for your reply. Scales measure weight not mass? While we are on the topic of scales let's put that U235 and the scale in a vacuum, what happens then?
Sir can you explain about gravitational wave which is travel in empty space. But iknow according to einstein space is not empty instant its like fabric but which theory can give proper explanation about gravitational wave. How wave travel without any disturbance..
use google - it's all there - my Friend Prof Rai Weiss received the Nobel Prize of Physics in 1917 for the first detection of GW. If you go to my Astronomy and Astrophysics playlist you will find several videos about GW.
Yes, didn't realize that you said so but i did the math on the fision product isotopes, the barium, krypton and 3 escaping neutrons and it adds up. Still, the concept of binding energy is poorly understood by me. I guess heat and the escaping neutrons kinetic energy is really the same thing ? If i do the math on the fision products binding energy and the U236, do i end up with the 200 MeV/atom ?
due to increase of binding energy there was a mass loss of 1 gram. Since energy is conserved the heat energy E was ∆m*c^2. ∆m is 0.001 kg. My next problem is about a break up into Kr and Ba.
@@lecturesbywalterlewin.they9259 Thanks for the personal answer, Probably my 2 questions above are answered in the next problem solution. Maybe in my answer, who knows. I hope you continue this nuclear series as planned. The fact that not many people have the correct answer might also indicate there is good reason to continue
@@hanslepoeter5167 I will do only 1 more problem on Nuclear Physics. One of the probllems is that most people never watched my solutions to problem 213 which is a 29 min long mini lecture.
@@lecturesbywalterlewin.they9259 I agree, that is a good indicator. I glazed over it once and read it again more thoroughly trying to solve 214. I guess it is more interesting for me as I sometimes work at the powerplant in Borssele although my work there has little to do with the physics involved. Maybe with the exception of going in controlled areas. Radiation dosage received and the limits involved are taken very seriously. It's a small and old one. About 500MW electrical power, about 1500 MW corepower. Efficiency varies mostly due to temperature of the westerschelde water I think about 33 to 36 %.
Watch all my 94 MIT course lectures. Start with 8.01, then 8.02, then 8.03. Do all the homework and take all my exams. *I guarantee you that you will then do very well on the Physics portion of any freshman college or JEE exam* You will find all information you need on this channel in three playlists "Homework, Exam, Solutions & Lecture Notes". 8.01 & 8.02 will each take about 200 hours, 8.03 about 250 hours.
the fision into 2 nuclei increases the binding energy which causes a mass loss of 1 gram. Energy is conserved thus the heat energy in the bomb explossion E=∆m*c^2. ∆m=0.001 kg.
@@lecturesbywalterlewin.they9259 I didn't understand but I think Britannica cleared it up for me: "The total mass of the bound particles is less than the sum of the masses of the separate particles by an amount equivalent (as expressed in Einstein’s mass-energy equation, E = m2) to the binding energy.) to the binding energy." I appreciate the reply, thanks. I shan't bother you more to improve my ignorance - it's my problem, not yours. ;)
@@CurtOntheRadio *read the solutions of problem 213.* I mention there in great detail that the mass of a nucleus is less than the mass of the sum of the individual neutrons and protons in that nucleus. It is the result of an increase of binding energy when the nucleus is formed.
Hello sir ❤ Sir I am JEE aspirant ..sir due to some reason i have lots of backlogs in subject...... and sir please guide me... I am very poor in mathematics....i can't understand the things in mathematics in one or maybe more times.........Sir how can I make my mathematics stronger😢 Fall in love with physics ❤️ Maths ?
Watch all my 94 MIT course lectures. Start with 8.01, then 8.02, then 8.03. Do all the homework and take all my exams. *I guarantee you that you will then do very well on the Physics portion of any freshman college or JEE exam* You will find all information you need on this channel in three playlists "Homework, Exam, Solutions & Lecture Notes". 8.01 & 8.02 will each take about 200 hours, 8.03 about 250 hours.
![Summer Walker - Heart Of A Woman [Official Lyric Video]](http://i.ytimg.com/vi/SFddctbZzw8/mqdefault.jpg)
Dr Lewin you are the gift that keeps giving. This clarification is a powerful testament to your commitment to teaching excellence. Thank you, Sir, for your lifetime devotion to the fine art of teaching.
Dr Lewin, your passion and energy is like MCC too. Your teaching has not lost a proton or neutron either and you are leaving a legacy brighter than stars. And so I wonder...are there any laws of physics that can be broken?
According to our current understanding, no, the laws of physics cannot be "broken" in the sense of being violated; however, if an observation appears to contradict a known law, it would simply mean that the law needs to be refined or expanded to account for new phenomena, essentially revealing a more complete picture of physics. Einstein's 2 theories are examples pof that.
Sir please come to INDIA, Almost every JEE aspirant knows you and want to meet you and i am one of them❤❤❤❤
That would be incredible! I love Professor Walter Lewin and India, so that would be good.
Sir i was not a good student in concept's of physics but i reversed my sentence after watching your lectures! Thank You Sir Walter Handrik Lewin.
●My dream is to be a lecturer like you in Netherland or Canada.
Love u from Pakistan! 🇵🇰
Thanks for one like😂
Dr. Lewin, I thank you sooooo much for your physics lectures!! I hope you the BEST and GOOD HEALTH. Thank you!! From South Korea, Jooil Kim :)
Professor, I've learnt to apply the faraday's law thanks to you! I've been watching many of your lectures at MIT on RUclips!
THANK YOU SO MUCH FOR EVERYTHING YOU DONE AS A PROFESSOR
Excellent!
U are an inspiration sir . U are the best and u are still teaching us all so thank u a lot sir for your dedication in teaching.
Professor, you're a legend of our times....you're the best
Wow, thanks
Hello ❤❤ Dear professor Lewin 🎉🎉
I hope you good
Sir I am UPSC spirant from India
Sir you are amazing person in the world
Sir 🎉 please give me some advice for my preparation........😊 I am so poor in English but i try to send for you message please sir tell me something about my preparation
You are my great ideal teacher.......so thankyou sir 🎉🎉
Sir i watch your old video and new video it's very interesting and very important......
Thankyou being you ❤
Take care dear Walter Lewin .....
I pray to God that you live long 🎉🎉
I also hope that,I can find something like you in my life 😊😊........
You are my impression 💞 💞 love u sir 💝 💝
.........
......
....
...
..
..
.
❤
Sir you are Cooper of our generation from Interstellar.
Concept cleared!!!
Hello Prof. Lewin, You are a great educator and a researcher yourself. Do you have any tips on how to understand and study better like you ?? because you understand physics in huge levels....
eat yoguurt every day but *never on Fridays* That also worked for Einstein and for me.
@@lecturesbywalterlewin.they9259 haha 😄
Haha ❤😂@@lecturesbywalterlewin.they9259
I have a theory that I want to study more in the future. It is that time is an imaginary number. t= i -1 -i 1 also maybe space and mass might be able to have negative values. I tried to make my own math theory when I came to the conclusion that 1+1 is not the same as 2. Just wanted to share my thoughts! :)
🥰 Thank you Sir Water Lewin.
THANKS SIR ❤
Thanks Sir
Good morning sir.
Good morning prof. lewin
So a fiction bomb is not really converting matter to energy, it is releasing the energy stored in the bonds that keeps the proton and neutron together.
This is a matter of semantics. The increase of binding energy results in mass loss. The mass loss of the U235 bomb on Hiroshma was 1 gram. mc^2 (m=0.001 kg) killed 2000 thousand people and destroyd the town. The number of protons and neutrons before fission/fusion is the same as after.
Greetings sir,
I’m preparing for competitive exams and would love your advice on how to study consistently and build an effective routine. Any tips on staying focused and making the most of my study time, would be greatly appreciated.
*it's all a matter of self discipline*
@@lecturesbywalterlewin.they9259 love it sir. I want to do something in maths but do not know in which field to advance. Any advice for me?
For india love you sir
Walter, can you define mass.
Also you cant exchange mass with energy until you define mass
when you put U235 on a scale before fission and when you place all parts after fission on the scale you have lost 1 gram (Hiroshima). Einstein: ΔE=Δm*c^2 ΔE is the heat produced during the explosion due to mass loss Δm.
Mass: a property of matter that exhibits inertia and participates in gravity.
@lecturesbywalterlewin.they9259 that's Walter for your reply. Scales measure weight not mass?
While we are on the topic of scales let's put that U235 and the scale in a vacuum, what happens then?
@@carultch a property of matter ? What's the "property" oh and could you define gravity
1 gm of science could do more than that
But this scenario will never be repeated again
Sir can you explain about gravitational wave which is travel in empty space. But iknow according to einstein space is not empty instant its like fabric but which theory can give proper explanation about gravitational wave. How wave travel without any disturbance..
use google - it's all there - my Friend Prof Rai Weiss received the Nobel Prize of Physics in 1917 for the first detection of GW. If you go to my Astronomy and Astrophysics playlist you will find several videos about GW.
Yes, didn't realize that you said so but i did the math on the fision product isotopes, the barium, krypton and 3 escaping neutrons and it adds up. Still, the concept of binding energy is poorly understood by me. I guess heat and the escaping neutrons kinetic energy is really the same thing ? If i do the math on the fision products binding energy and the U236, do i end up with the 200 MeV/atom ?
due to increase of binding energy there was a mass loss of 1 gram. Since energy is conserved the heat energy E was ∆m*c^2. ∆m is 0.001 kg. My next problem is about a break up into Kr and Ba.
@@lecturesbywalterlewin.they9259 Thanks for the personal answer, Probably my 2 questions above are answered in the next problem solution. Maybe in my answer, who knows. I hope you continue this nuclear series as planned. The fact that not many people have the correct answer might also indicate there is good reason to continue
@@hanslepoeter5167 I will do only 1 more problem on Nuclear Physics. One of the probllems is that most people never watched my solutions to problem 213 which is a 29 min long mini lecture.
@@lecturesbywalterlewin.they9259 I agree, that is a good indicator. I glazed over it once and read it again more thoroughly trying to solve 214. I guess it is more interesting for me as I sometimes work at the powerplant in Borssele although my work there has little to do with the physics involved. Maybe with the exception of going in controlled areas. Radiation dosage received and the limits involved are taken very seriously. It's a small and old one. About 500MW electrical power, about 1500 MW corepower. Efficiency varies mostly due to temperature of the westerschelde water I think about 33 to 36 %.
Ohhh 😲
Sir should we watch MIT videos in oder or we can scelet concepts
do what's best for you
hey handsome! give me some links for me to explore some simple physics everyday please. I'm a beginner and don't understand much about physics.
Watch all my 94 MIT course lectures. Start with 8.01, then 8.02, then 8.03. Do all the homework and take all my exams. *I guarantee you that you will then do very well on the Physics portion of any freshman college or JEE exam* You will find all information you need on this channel in three playlists "Homework, Exam, Solutions & Lecture Notes".
8.01 & 8.02 will each take about 200 hours, 8.03 about 250 hours.
So where does the M come from to produce the E then? If the M hasn't changed, what use is E=MCC? Sorry for my ignorance. ;)
the fision into 2 nuclei increases the binding energy which causes a mass loss of 1 gram. Energy is conserved thus the heat energy in the bomb explossion E=∆m*c^2. ∆m=0.001 kg.
@@lecturesbywalterlewin.they9259 I didn't understand but I think Britannica cleared it up for me:
"The total mass of the bound particles is less than the sum of the masses of the separate particles by an amount equivalent (as expressed in Einstein’s mass-energy equation, E = m2) to the binding energy.) to the binding energy."
I appreciate the reply, thanks. I shan't bother you more to improve my ignorance - it's my problem, not yours. ;)
@@CurtOntheRadio *read the solutions of problem 213.* I mention there in great detail that the mass of a nucleus is less than the mass of the sum of the individual neutrons and protons in that nucleus. It is the result of an increase of binding energy when the nucleus is formed.
Hello sir ❤
Sir I am JEE aspirant ..sir due to some reason i have lots of backlogs in subject...... and sir please guide me... I am very poor in mathematics....i can't understand the things in mathematics in one or maybe more times.........Sir how can I make my mathematics stronger😢
Fall in love with physics ❤️
Maths ?
Watch all my 94 MIT course lectures. Start with 8.01, then 8.02, then 8.03. Do all the homework and take all my exams. *I guarantee you that you will then do very well on the Physics portion of any freshman college or JEE exam* You will find all information you need on this channel in three playlists "Homework, Exam, Solutions & Lecture Notes".
8.01 & 8.02 will each take about 200 hours, 8.03 about 250 hours.
Ok sir done ❤
Thank you sir 🙏
Understood
Sir please tell me why. an electron excite from its ground state
that only happens if energy is added - use google
😂