Professor Lewin has made Physics look simple, wonderful, and lovely. I have got a PhD in Physics. Studying something is different from understanding it. Honestly speaking, his amazing lectures taught me what Physics is. I'd like to thank him for his great attempts and efforts in teaching Physics.
An inspiration to so many, a true colossus in the world of academia. These lectures are just so brilliant to watch, thank you for the greatness of the man and for posting on here.
Prof Lewis,I find your lectures so brillant that I share them with my own private students who really want to understand what is behind the formulae rather than just apply then in exam questions or in their proffession .
Namaste Sir ..What a lovely demonstration of science you have shown to us. After watching this, there is no guy who would not seek to understand more about Electricity and Magnetism. Kudos to your spirit towards Physics and the dedication and efforts you put in to it. Thanks a lot for making us feel rejuvenated and sparking the lit inside us to live and love Science throughout our entire life. 🙏🙏🙏❤️
Mr. Lewin, thanks to you, I don't need to go to an IIT coaching. After just watching 1 of your amazing lecture, I was able to solve JEE and IE irodov physics problems without hesitation. I don't even need to use a text for my JEE/Olympiad physics, rather use your lectures and make notes. Thank you for making my day!
thank you very much sir for giving these lectures and making them available online for the students around the world. as you say the professor who makes physics boring is criminals. regards
Guten Tag, I was a student at TU Berlin in the mid 80s. I used to attend lectures bu a professor of mechnics who made things sound very simple and but at teh same time keeping the mystery of observing nature alive. You do belong to the same category of teachers. Bravo. Lebt Voll. Danek Schon Dipl-Ing Paul...ps: i am trying to get my 16 years old kid to watch your videos in physics adventure....she does not like school physics as mechanics, electricity and fluid mechanics etc are described by different laws and teachers explanations are not satisfactory.....she claims there is dark matter in space like the ether of yester years.
You just made my day.The most amazing prof I have seen in whole of youtube.This is just amazing. I wish I had profs like you in my college. What would you advice me to do to be good at problem solving ?
Dear Prof. Lewin, I am a huge fan of yours. The first time I heard about your video lectures was in my first year at the University (I studied physics for becoming a high school teacher in Austria). A dutch friend of mine showed me your videos and said proudly that you are from the Netherlands. Some years later a friend of my parents watched all your courses and he said to my parents that I can learn a lot from you. This year is my second year as a teacher in high school and last year another teacher was sick and so I was teaching instead of him. I made an introduction to electricity and used some of your ideas, experiments and explanations from your video lectures. For example I referred to the „fire“ as Benjamin Franklin called it. At that day a pupil went to the principal of the school for a different reason, but the pupil was also taking positive about my introduction to the principal. Thank you and the film crew very much! I have a few question to you and I am looking forward to your answer: Do you know the book „Conceptual Physics“ from Paul Hewitt and if you know the book what do you think about it? Do you have book or video advices for me as a beginning physics teacher?
(Translation by Google) I watch the video regularly because I think it's wonderful, and if I had noticed Walter earlier and understood physics better than today, I would have done everything possible from him to study. For me still one of the most brilliant professors of all time. But there is, to be honest, one more thing why I keep watching the video. Yes, of course I know that it doesn't belong in the comments here, but I have to adore this beautiful woman (Amy?) From 28:15 to 28:57 every time I see her and ask me what she's doing now. And who is she ? Sorry that this doesn't belong here, but the thought drives me crazy in my mind.
Each magnet has a north and a south pole. The north pole of magnets in compasses point to the magnetic pole in Northern Canada (it's 503 mies from the Earth geographic pole). Thus that is the magnetic South pole of Earth.
Loved the ending of the lecture! But sir what was the answer to that homework question... Why does the balloon stay stuck to the wall or some confetti to the comb and some don't ?
Is it because the confetti has both positive and negative charges on both sides. The side of the paper bit which is more positive is attracted and stuck but the side of paper bit which has more negative charge(along with positive) is first attracted then repelled to comb which is negative.
I'm sorry to ask such a simpleton question but what math skills are required to grasp the concepts of physics. I understand to an extent but would LOVE to learn more. If anyone can please please do help! Thank you for your time.
I suggest you start watching my 8.01 lectures and see whether you can handle the calculus and the simple differential eqs. Then do the same for 8.02 and after that 8.03. The math will get more difficult but perhaps you can handle it. The math needed for QM (quantum field theory) and for General Relativity is MUCH more difficult.
Thank you so much Professor. I am going through the 8.01 videos and I understand some things and others are just me not knowing and my curiosity to find out . I will most likely find and take some sort of math classes to help me. I never took calculus, nothing beyond high school math but I grasp what you teach because of the way you present it and the 8.01 help videos are so, well ... helpful. If you can recommend some calculus learning videos I would greatly appreciate it but i can hear you saying "google" already =). Thank You for your time Professor good day too you.
You may have a rough time to follow my lectures without some basic knowledge of calculus. I cannot recommend any math book, but I suggest you search on the web.
sir you said that when we kiss the balloon the charge gets conducted to earth but how can we do so when we are wearing a non conductive material as sandals... etc..
+george ashvad Soles don't have the required very high resistance. However, if I stood on a 3 cm thick glass plate (as I do when I beat the student) then the current through me to the ground is negligibly small.
+Lectures by Walter Lewin. They will make you ♥ Physics. thank you very much sir for reply of yours... and can i know a better way of being in contact with you, sir...
am in 12th grade and am not studing my syllabus and watching ur videos from past 3 hrs and just wanting to watch more and more and really really really want to see u studing live... PHYSICS WORKS AND AM STILL ALIVE!!!!!!!!!! :))))))
@@lecturesbywalterlewin.they9259 Are there any prerequistes to understand your lectures? BTW, if we want to calculate the initial velocity of a ball being thrown up in the sky, do we need to use calculus to determine it? How do physics problems so blatantly mention that the initial velocity is this and this. How do we calculate it?
+Lectures by Walter Lewin. They will make you ♥ Physics. Hi Professor Lewin... It turnes out that mineral electrolites such as potasium and chloride, ect and antioxidents such as vitamin A, C and E, ect are all huge electron donors and neutralize free radicals or proton ions. When we are born and when we are very young, we have more negative charge than positive charge, but over time we loose this overbalance of electron advantage and become cationic overall. To combat this proton over ballance, we can rebuild our negative charge by grounding to the earth, (because the Earth carries a negative charge at the surface) and we can further build negative charge with electrolites and antioxidents. The health implications of negative charge and negative ions are profound and I would like to recieve the Nobel Prize for the work I have done and for the work of countless others who have made this understanding possible. My understanding of electrostatic charge was made posible in part through MIT OCW and by some very dedicated peple at MIT and by many others who have shared their understanding on this life changing revolution. Understanding negative electron charge is truly the greatest health breakthrough of the 21 st Century. Thank you again so much.
respected sir this is one question which no one answers to my satisfaction. If charges can't be created,then how did they come to existence on earth? I do know it was due to big bang explosion..But if they can't be created,they shouldn't be present,right? I mean if we can't be born,we can't live here too,right?
The conservation of charges does NOT mean that charges cannot be created. It means that for every minus charge you create there will also have ti be a positive one with the same magnitude.
so it is impossible to create only positive charge without negative charge even in any explosion like our universe was created. thank you i am pleased to have your reply
You are entitled to believe what you want to believe. Freedom of religion is the cornerstone of all civilized democracies. I respects all religions. But do not confuse religion with science. Science is about FACTS regardless of a person's BELIEFS. Religion is about BELIEFS regardless of the FACTS.
De voetbalclub waar mijn dochter Elina voetbalt heeft sinds 2 jaar kunstgras! Je wilt niet weten hoe vaak de dames een opdonder krijgen op t veld 😂. Vandaag was er een voetbal kamp, en de hitte was immens op dat veld! En de normale grasvelden waren lekker koel.
Ghost Ghost we have added subtitles to my 35 8.01 lectures. It's expensive and very time consuming. We are now trying to also add subtitles to 8.02. I am sorry but it is NOT possible to add subtitles to most non-lecture videos. The exception is "For the Love of Physics".
Can someone explain to me why he refers to the magnetic North Pole as South in in this lecture in layman's terms. I am very interested in magnetic fields and would love to know why he refers to the magnetic north as south. I know they constantly switch but from a thesis perspective why does is he intrinsically believe this? Thanks. Also I wish he said See you next Tuesday.
We can measure the direction of the magnetic dipole field from Earth. Near the geographic South pole the magnetic field lines are UP, thus that is the magnetic North pole. Near the geographic North pole the magnetic field is pointing down. Thus the magnetic North pole is near the geographic South pole and the magnetic South pole is near the geographic North pole.
So to echo the other person responding here, is that if you look at a magnet, one end of the magnet is the magnetic south, while the other is the magnetic north. You can use a tool that you bring to the magnet will tell you which end is N and S. If you were to take that tool theoretically to the magnetic pole located in Canada (Northern Hemisphere), it would show that pole to be magnetically a South pole, and the magnetic pole in the southern hemisphere would be shown as N. So the North Magnetic Pole is actually magnetically south, and vice versa. Hope this helps. Another way to remember is that the compass magnet itself has its magnetic north pole pointing to the Northern Hemisphere's magnetic pole.
The Earth Magnetic field is a dipole field (magnetic monopoles do not exist). A magnetic compass has a magnetic needle. When the needle was made magnetic, the North pole of the needle was colored RED. This red end of the needle will be attracted by a the South pole of any magnet thus also by the Earth magnet. Since the red end of the needle will point to the North, the magnetic pole of the Earth which is close to the geographic North pole, is actually the Earth magnetic SOUTH POLE.
not true I have no Parkinson - already in 1998 when I lectured at MIT for 600 students in 26-100 (MIT's largest class room) would have shakes. It was then determined that it is due to adrenaline - At home (now at agge 88) *zero shakes*
![WE GOT ACCESS TO GPT-3! [Epic Special Edition]](/img/n.gif)
Professor Lewin has made Physics look simple, wonderful, and lovely. I have got a PhD in Physics. Studying something is different from understanding it. Honestly speaking, his amazing lectures taught me what Physics is. I'd like to thank him for his great attempts and efforts in teaching Physics.
God bless Walter, I wish I had a lecturer like this. Physics is so beautiful if presented properly, and I have to admit, this is magnificent
He is simply the best , he truly loves this stuff and even better ,he wants you to love and understand this stuff.
+Jjames Anderson Thank you.
I agree
Electrifying and magnetizing!
ha ha ha
That's why I started The Electrical Engineering...It will takes an absolute passion to understand deeply through in this special wonder.
An inspiration to so many, a true colossus in the world of academia. These lectures are just so brilliant to watch, thank you for the greatness of the man and for posting on here.
Prof Lewis,I find your lectures so brillant that I share them with my own private students who really want to understand what is behind the formulae rather than just apply then in exam questions or in their proffession .
I love professor Lewin's demonstrations. If more teachers were like him we would have a lot more students that are interested.
Namaste Sir ..What a lovely demonstration of science you have shown to us. After watching this, there is no guy who would not seek to understand more about Electricity and Magnetism. Kudos to your spirit towards Physics and the dedication and efforts you put in to it. Thanks a lot for making us feel rejuvenated and sparking the lit inside us to live and love Science throughout our entire life. 🙏🙏🙏❤️
Mr. Lewin, thanks to you, I don't need to go to an IIT coaching. After just watching 1 of your amazing lecture, I was able to solve JEE and IE irodov physics problems without hesitation. I don't even need to use a text for my JEE/Olympiad physics, rather use your lectures and make notes. Thank you for making my day!
😊
What a wonderful teacher to explain these type of things so easily and frankly . Thanks a lot
Really GREAT teacher he is truly dedicated towards physics and his profession.... really good...
Amazing class, thank you for sharing all your knowledge with us in an easy way.
:)
Thanku professor for your lecture ....its just amazing ...
Thank you sir ...
For your superior Lacture
I watched all your video after seeing this
Really great teacher, thumbs up. i´m from Germany and you are a lot better than my Physic teacher.
Thank you sir for attractive lecture of electricity and magnetism
I understood that how to feel the PHYSICS after seeing your lecture
A true knowledge bearer having torch of Physics.
Alot of love from khans of pakistan❤❤❤
Thank you for this wonderful lecture
THANKS A LOT, PROFESSOR! I'm in class 8, but I could still understand most of it😃😃 This video lecture was very useful...
sir I was surprised to see that static plastic if we cut then it will separate the north and south
sir u r great by an indian
thank you very much sir for giving these lectures and making them available online for the students around the world. as you say the professor who makes physics boring is criminals.
regards
Professor Walter Lewin you are Awesome, i have learnt more knowledge in Physics from your Lecture. Thanks.
:)
Amazing professor!! I love his lectures .
:)
Guten Tag, I was a student at TU Berlin in the mid 80s. I used to attend lectures bu a professor of mechnics who made things sound very simple and but at teh same time keeping the mystery of observing nature alive. You do belong to the same category of teachers. Bravo. Lebt Voll. Danek Schon
Dipl-Ing Paul...ps: i am trying to get my 16 years old kid to watch your videos in physics adventure....she does not like school physics as mechanics, electricity and fluid mechanics etc are described by different laws and teachers explanations are not satisfactory.....she claims there is dark matter in space like the ether of yester years.
You just made my day.The most amazing prof I have seen in whole of youtube.This is just amazing. I wish I had profs like you in my college. What would you advice me to do to be good at problem solving ?
watch the 140+ problem solving videos on this channel. They are listed under "Help Sessions"
you are one of the best professor in the world.... i like your videos very much......greeting from Sri Lanka.😃😃😃
:)
Really i love the lecture ❤❤❤❤
1:45 that's a lovely face there at the back holding the water bottle
Awesome.
Dear Prof. Lewin,
I am a huge fan of yours. The first time I heard about your video lectures was in my first year at the University (I studied physics for becoming a high school teacher in Austria). A dutch friend of mine showed me your videos and said proudly that you are from the Netherlands. Some years later a friend of my parents watched all your courses and he said to my parents that I can learn a lot from you. This year is my second year as a teacher in high school and last year another teacher was sick and so I was teaching instead of him. I made an introduction to electricity and used some of your ideas, experiments and explanations from your video lectures. For example I referred to the „fire“ as Benjamin Franklin called it. At that day a pupil went to the principal of the school for a different reason, but the pupil was also taking positive about my introduction to the principal. Thank you and the film crew very much!
I have a few question to you and I am looking forward to your answer: Do you know the book „Conceptual Physics“ from Paul Hewitt and if you know the book what do you think about it? Do you have book or video advices for me as a beginning physics teacher?
I don't know that book
Thank you for your answer! @@lecturesbywalterlewin.they9259
At 44:55 if im not mistaken thats a trinidadian phrase used right? "So leh we go"
A phenomenal physics teacher
Your Muscles Will Not Solve the Problem but your brain Might,,,,,
I love this sentence,,,,,
Professor you are best teacher in this world 🙂. And i also want to become a physist and a physics professor like you :)❤
All the best
(Translation by Google) I watch the video regularly because I think it's wonderful, and if I had noticed Walter earlier and understood physics better than today, I would have done everything possible from him to study.
For me still one of the most brilliant professors of all time.
But there is, to be honest, one more thing why I keep watching the video. Yes, of course I know that it doesn't belong in the comments here, but I have to adore this beautiful woman (Amy?) From 28:15 to 28:57 every time I see her and ask me what she's doing now. And who is she ?
Sorry that this doesn't belong here, but the thought drives me crazy in my mind.
Amy was my mistress at the time
@@lecturesbywalterlewin.they9259 She is soooooooo beautifull
Dear Walter, a think what i am asking me for very often is, how r u at this times? I wish'ed you lived 4 ever, but this is a very Bad wish at all.
Thank you for me to bring to my school days
Is there any scientific reasoning behind why when we cut a magnet in two halves then we get 2 separate magnets (as you showed at 12:10)???
use google
sir you are genius love you sir
I’m a fan of W. Lewin. He is born to be a teacher
Excellent Sir. Thanks and Regards 😊🙏🙏🙏🙏🙏🙏🙏🙏🙏😊🙏
Most welcome
How do we know which end of the pole indictor is pointing north?
Each magnet has a north and a south pole. The north pole of magnets in compasses point to the magnetic pole in Northern Canada (it's 503 mies from the Earth geographic pole). Thus that is the magnetic South pole of Earth.
Loved the ending of the lecture! But sir what was the answer to that homework question... Why does the balloon stay stuck to the wall or some confetti to the comb and some don't ?
Is it because the confetti has both positive and negative charges on both sides. The side of the paper bit which is more positive is attracted and stuck but the side of paper bit which has more negative charge(along with positive) is first attracted then repelled to comb which is negative.
❤
I'm sorry to ask such a simpleton question but what math skills are required to grasp the concepts of physics. I understand to an extent but would LOVE to learn more. If anyone can please please do help! Thank you for your time.
I suggest you start watching my 8.01 lectures and see whether you can handle the calculus and the simple differential eqs. Then do the same for 8.02 and after that 8.03. The math will get more difficult but perhaps you can handle it. The math needed for QM (quantum field theory) and for General Relativity is MUCH more difficult.
❤❤
Thank you so much Professor. I am going through the 8.01 videos and I understand some things and others are just me not knowing and my curiosity to find out . I will most likely find and take some sort of math classes to help me. I never took calculus, nothing beyond high school math but I grasp what you teach because of the way you present it and the 8.01 help videos are so, well ... helpful. If you can recommend some calculus learning videos I would greatly appreciate it but i can hear you saying "google" already =). Thank You for your time Professor good day too you.
You may have a rough time to follow my lectures without some basic knowledge of calculus. I cannot recommend any math book, but I suggest you search on the web.
Sir, I am interested for your lecture... If it is transilated to bangali language i will be very happy
Hello Dear sir,
Can you please make videos on AP Physics 1, 2, and C?
I love your lectures! Absolutely marvelous!
Check his 8.01 and 8.02 lectures
hi sir,why emf opposes the that very cause?what the reason of it?
watch my course lectures.
28:28 a true gentleman
Why do they know the amount of materia and antimateria are are diferents?
sir how to make any rod negative sir plz answer
Nice way of teaching
:)
professor totally rocks !!!!! p
sir you said that when we kiss the balloon the charge gets conducted to earth but how can we do so when we are wearing a non conductive material as sandals... etc..
+george ashvad Soles don't have the required very high resistance. However, if I stood on a 3 cm thick glass plate (as I do when I beat the student) then the current through me to the ground is negligibly small.
+Lectures by Walter Lewin. They will make you ♥ Physics. thank you very much sir for reply of yours... and can i know a better way of being in contact with you, sir...
Lord Kelvin says quaternions are evil. Agree or disagree?
sir, why we use current as the fundamental property and not the charge
history!!! ask google
am in 12th grade and am not studing my syllabus and watching ur videos from past 3 hrs and just wanting to watch more and more and really really really want to see u studing live...
PHYSICS WORKS
AND AM STILL ALIVE!!!!!!!!!! :))))))
They are lucky...
Hi Professor Lewin. I'm a 15 year kid and want to know what is mean by direction of magnetic field?
question unclear. Watch my 8.02 lectures in which I cover Magnetic Fields.
@@lecturesbywalterlewin.they9259 Are there any prerequistes to understand your lectures?
BTW, if we want to calculate the initial velocity of a ball being thrown up in the sky, do we need to use calculus to determine it? How do physics problems so blatantly mention that the initial velocity is this and this. How do we calculate it?
I wanted to be Genius like him, who else?
32:51 What does the boy say here?
13:18 -13:20 it's not clear can someone tell me what did he say i'm not a native english speaker thank you
+loka well 13:18-13:20 "they will get the Nobel Prize"
Ah okay thank you :)
+Lectures by Walter Lewin. They will make you ♥ Physics. Hi Professor Lewin... It turnes out that mineral electrolites such as potasium and chloride, ect and antioxidents such as vitamin A, C and E, ect are all huge electron donors and neutralize free radicals or proton ions.
When we are born and when we are very young, we have more negative charge than positive charge, but over time we loose this overbalance of electron advantage and become cationic overall.
To combat this proton over ballance, we can rebuild our negative charge by grounding to the earth, (because the Earth carries a negative charge at the surface) and we can further build negative charge with electrolites and antioxidents. The health implications of negative charge and negative ions are profound and I would like to recieve the Nobel Prize for the work I have done and for the work of countless others who have made this understanding possible. My understanding of electrostatic charge was made posible in part through MIT OCW and by some very dedicated peple at MIT and by many others who have shared their understanding on this life changing revolution. Understanding negative electron charge is truly the greatest health breakthrough of the 21 st Century. Thank you again so much.
when i watch this video, i was refresh
respected sir this is one question which no one answers to my satisfaction. If charges can't be created,then how did they come to existence on earth? I do know it was due to big bang explosion..But if they can't be created,they shouldn't be present,right?
I mean if we can't be born,we can't live here too,right?
The conservation of charges does NOT mean that charges cannot be created. It means that for every minus charge you create there will also have ti be a positive one with the same magnitude.
so it is impossible to create only positive charge without negative charge even in any explosion like our universe was created. thank you i am pleased to have your reply
After the big bang the same amount of neg (electrons) and pos (protons) charge were created. Thus the net charge of the Universe is ZERO.
thank you sir and you are great .
You are entitled to believe what you want to believe. Freedom of religion is the cornerstone of all civilized democracies. I respects all religions. But do not confuse religion with science. Science is about FACTS regardless of a person's BELIEFS. Religion is about BELIEFS regardless of the FACTS.
i hope i will meet u someday
If you come to Cambridge, MA USA we can meet
27 min
Because both are conductor
@27:58 is that Peter Higgs?
nope he is Walter lewin
De voetbalclub waar mijn dochter Elina voetbalt heeft sinds 2 jaar kunstgras!
Je wilt niet weten hoe vaak de dames een opdonder krijgen op t veld 😂.
Vandaag was er een voetbal kamp, en de hitte was immens op dat veld! En de normale grasvelden waren lekker koel.
er zijn voor en nadelen aan kunstmatig gras
7 dislikes? Must be people that are allergic to learning!
Hi, can you add subtitles? :) English isn't my primary language
Ghost Ghost we have added subtitles to my 35 8.01 lectures. It's expensive and very time consuming. We are now trying to also add subtitles to 8.02. I am sorry but it is NOT possible to add subtitles to most non-lecture videos. The exception is "For the Love of Physics".
Lectures by Walter Lewin. They will make you ♥ Physics. Okay, nevermind :) thank you for answer :) even so I quite understand :)
where are the next lectures ,,,, I just LOve his style
all lectures are on this channel - click on "playlist"
czcams.com/channels/iEHVhv0SBMpP75JbzJShqw.html
1000 volts : yes
Can someone explain to me why he refers to the magnetic North Pole as South in in this lecture in layman's terms. I am very interested in magnetic fields and would love to know why he refers to the magnetic north as south. I know they constantly switch but from a thesis perspective why does is he intrinsically believe this?
Thanks.
Also I wish he said See you next Tuesday.
We can measure the direction of the magnetic dipole field from Earth. Near the geographic South pole the magnetic field lines are UP, thus that is the magnetic North pole. Near the geographic North pole the magnetic field is pointing down. Thus the magnetic North pole is near the geographic South pole and the magnetic South pole is near the geographic North pole.
So to echo the other person responding here, is that if you look at a magnet, one end of the magnet is the magnetic south, while the other is the magnetic north. You can use a tool that you bring to the magnet will tell you which end is N and S. If you were to take that tool theoretically to the magnetic pole located in Canada (Northern Hemisphere), it would show that pole to be magnetically a South pole, and the magnetic pole in the southern hemisphere would be shown as N. So the North Magnetic Pole is actually magnetically south, and vice versa. Hope this helps. Another way to remember is that the compass magnet itself has its magnetic north pole pointing to the Northern Hemisphere's magnetic pole.
Thank you. =]
The Earth Magnetic field is a dipole field (magnetic monopoles do not exist). A magnetic compass has a magnetic needle. When the needle was made magnetic, the North pole of the needle was colored RED. This red end of the needle will be attracted by a the South pole of any magnet thus also by the Earth magnet. Since the red end of the needle will point to the North, the magnetic pole of the Earth which is close to the geographic North pole, is actually the Earth magnetic SOUTH POLE.
10:02 That's why Prof Lewin has less hair.
Who is here after Professor's new video about David
You came here for 28:00
Thank you so much sir
It was amazing 🤩
No doubt his handwriting has become shaky due to Parkinson but still a brilliant man
not true I have no Parkinson - already in 1998 when I lectured at MIT for 600 students in 26-100 (MIT's largest class room) would have shakes. It was then determined that it is due to adrenaline - At home (now at agge 88) *zero shakes*
sorry for this comment then actually my grandfather had parkinson and he shaked so i estimated that you too may suffer from the same disease
I thought he was British. well back then everybody learning british English. Then people come to US to eat burgers, got swayed....