8.02x - Lect 2 - Electric Field Lines, Superposition, Inductive Charging, Induced Dipoles

Electric Field, Field Lines, Superposition, Inductive Charging, Dipoles, Induced Dipoles, Great Demos
Assignments Lecture 1, 2, 3, 4 and 5: freepdfhosting.com/2cb4aad955.pdf
Solutions Lecture 1, 2, 3, 4 and 5: freepdfhosting.com/75b96693f2.pdf

[@parthkdoshi]

The way you glide to make the dotted line is so satisfying

[@abhisek175]

@Chris Metcalf Lol...Dark humour...😂

[@anayasa6103]

Chris Metcalf oh my goodness 😂

[@sdelgadon152]

isn't that amazing? how he does it is unbelievable.

[@jatinnirmal8569]

Yes brother.... I was confuse in 1st time and In 2nd i understand this

[@ads2955]

I'm pretty sure its a different kind of chalk. It looks different from the others

[@6thHorseMan]

Eggcellent lecture

[@abc-dx3dd]

Egg omelet on his shirt , ikr😂😂😂😂

[@nairanjith]

@@abc-dx3dd Sunny side forward..

[@danielmainuu8903]

wow

[@Aristothink]

Experiments are everything. I had this 802x course with Walter Lewin and till today (10 years later) I still show those videos to my students. After all it's hard to find good experiments to show to our students. Make them ourselves is expensive, so Mr. Lewin's experiments help a lot my students to understand physics SEEING it !!! Thank you Mr. Lewin 🙏

[@roshangaul45]

Which class do you teach?

[@codymacler9200]

It is (somewhat) a mystery how your lectures appeared in my recommended, but I'm glad they did! I love these!

[@lecturesbywalterlewin.they9259]

:)

[@mfbandit7930]

His breakfast was so charged that it got stuck to his shirt for the whole lecture! Amazing.

[@shubhsrivastava4762]

😂

[@sriharisworld4708]

Better luck next time for a good joke.

[@adsaasda9837]

🤨

[@divyaprakashtiwari5017]

🤣🤣

[@imnimbusy2885]

Because he is just overwhelmingly positive!

[@abhinavpandey.19]

I'm from india and class 12 and i preparing for iit jee and sir your lectures are more than enough for me and im very blessed to have you in my life i started loving physics because of you thank you sir.

[@lecturesbywalterlewin.they9259]

It's my pleasure

[@taihatranduc8613]

"Don't be late. I mean you, pretty boy". It can be a meme

[@achyutsingh5298]

Lol were they being serious??😂

[@kushgodara2261]

did the 100th like

[@myrasinha6428]

what was that tho? i didn't get it

[@SauravKumar-cu5is]

@@myrasinha6428 it's the funniest seriuos way to scold students for being late

[@cowpacino]

@@myrasinha6428 it's probably some thing for a fraternity

[@HanajimaSensei]

Thank you for these. I'm a high school student, and these videos absolutely make me love physics more and more everyday. :D Sir, you've persuaded me to continue to university with this god tier -stuff.

[@lecturesbywalterlewin.they9259]

+HanajimaSensei That's great news Hanajima, you made my day!

[@ftyrone5719]

Hey, so how are you doing?

[@mellifluoussu_5736]

@@ftyrone5719 yeah I wonder it, too

[@thienthanhtranoan6723]

KEYWORDS 0:30 electric field and electric fiels line (single charge +, -, dipoles, 2 charges) + physics meaning of EFL, charges in field 27:10 inductive charging And test 33:35 induced dipoles - torque (ex with vandergraff) 45:20 induced walter lewin (grounding)

[@jopesh3294]

prof lewin!!! loads of love from INDIA!!! I'm just a high school student here...but yeah I am in love with physics just because of you!!! May be in future...Physics will be my wife!!

[@lecturesbywalterlewin.they9259]

:)

[@abc-dx3dd]

Hahaha😂😂

[@fadedguy9822]

Ya! Awesome. This is where physics comes into life!! I am a school student. Really, physics is lame without imagination!!

[@gabbarisback6052]

I am also from india

[@harishnarain1726]

🤓😂

[@ruilopes5399]

I'm 17 years old, and I'm physics student at Portugal, I saw all 8.01x lects, your classes make physics something interesting, thanks for creating this youtube channel. Honor to hear you lects, thanks Sir Walter.

[@lecturesbywalterlewin.they9259]

+LopeSAURUS Thank you!

[@ruilopes5399]

+Lectures by Walter Lewin. They will make you ♥ Physics. I have 1 questions for you. Have you thought about lecturing the world? I would love to assist one lect LIVE

[@lecturesbywalterlewin.they9259]

+LopeSAURUS I am teaching the World. My lectures are being viewed yearly by more than 6 million people from more than 85 different countries.

[@itachu.]

same im 17 too , and i love watching sir's lectures , they teach a lot rather than just memorizing physics.

[@fredsilvers1427]

He's such an enthralling teacher that I didn't notice the fried egg until 17 minutes into the lecture lol.

[@SuperMagnetMan]

I graduated as an electrical engineer in 1979 and love Walter's explanations. I work extensively in magnetics and all of his physics lectures are a great review to help keep me refreshed on the electric and magnetic concepts.

[@saksham3002]

he definitely is going to be an inspiration for a physics prodigy of our generation.......

[@Lorcanoshanahan]

two words: Richard Feynman

[@NicolasSchmidMusic]

For sure, when someone makes you love physics, you won't forget him

[@manuferre7186]

Completely

[@carbon273]

Imagine anticipating every class lecture with this professor. Very memorable experiments.

[@yogitadhakad5193]

For my exams these lectures made me to score top rankings .... Love him and his lectures .... Proud to be ur online student sir might u dont know me now but one day i will make proud u to have me as ur online student and this is my adhere promise with ruthless determination ...

[@JaJa-xc3gg]

I love the way you draw your dotted lines. It's insane

[@lecturesbywalterlewin.they9259]

+Ja Ja Watch this one - you will LOVE it even more. kzbin.info/www/bejne/qJLYo59qqJWjoLc

[@antisocialatheist1978]

If I had one wish, I believe i would certainly consider wishing for ten thousand Walter Lewins to teach the world physics. Imagine what a wonderful world it would be if everyone had a teacher and role model like him. Unfortunately, I was never able to attend a university and receive a proper education, so i have to settle for watching lectures on KZbin and taking free classes on EdX. It must have been great to have the experience of learning physics directly from Professor Lewin. He is an amazing man

[@abbasrizvi9072]

Sir the video is 8 years old ..But the way you clear the concepts are eternal..You really are one of the best teachers of modern Era ..Lots of love from India ..Hope we can meet someday❤️

[@lecturesbywalterlewin.they9259]

this video was made at MIT in 2002

[@MaakaSakuranbo]

These are great :D Getting more into electricity/electric engineering and I always hated when I was told to not worry about how things work on a deeper level and just learn Ohm's law (which is of course a valid law, but I always wanted to know where it comes from, and get a mental picture of how stuff works on a more fundamental level). And this really helps. As a side-benefit I even get to refresh my math a bit on the assignments

[@lecturesbywalterlewin.they9259]

:)

[@alvamind5286]

Your lectures are actually helping me like physics. Physics at university has been pretty difficult for me, but your lectures actually makes it really easy to understand, which has never been the case before. Just have this last physics class left and then I graduate! Wish me luck.

[@uttam2274]

Indeed, your way of explanation and demonstration of physical stuff make us love Physics! Being an Indian High School student, I am going through these wonderful lectures to have a better clarity and strong grasp over the concepts. Doing tons and tons of numericals by just remembering the related formulae and direct results and not giving much attention towards why and how, is like eating kgs of edible stuff without acknowledging the nutritional value of those.

[@erade4051]

I started learning physics again because it is a requirement before picking an engineering field for uni, and I had already kind of had my mind set on programming and computer sciences. But watching these videos and just getting to read a physics book on my own terms without someone trying to force equations down my throat, I've become in every sense of the word addicted to physics. I am spending anywhere between 6-8 hours a day now, if not doing assignments, atleast listening to your lectures, and it's not to pass some test or get some grade, but because it's just fun. Pretty cool how all it can take is one persons enthusiasm to spark a love for something. I'm going to choose a major in physics, and you're part of the reason why. Thanks.

[@brunogavloski]

Queria ter um professor com essa didática e paixão aqui no Brasil

[@MrVassily]

These lectures will help me alot this semester, thank you teacher. Greetings from Colombia.

[@lecturesbywalterlewin.they9259]

GREAT!

[@anjaligiri6935]

I've never considered physics as an amazing subject , but now I know why ... Because I've never been taught like this . Thank you so much sir 🙏🙏❤️

[@rohanjangam511]

Thank you, Mr. Walter Lewin. I had ended up socfusing myself with field really bad. It's all clear now. Really intutive. Cheers.

[@huseyintuter]

30 years after my engineering graduate I watch Mr lewin’s lectures just for curiosity not for grades not for a special need for my work in deed learning is pure fun. Kids who had opportunity to attend his class should be damn lucky. He is a treasure

[@Xaython]

I am loving these lectures. Great Stuff! Thanks for all the help you have given me this semester. I'm even showing your videos to my kids and they love them and could even explain kinda what you were talking about after watching.

[@lecturesbywalterlewin.they9259]

GREAT!

[@anonymous.youtuber]

What a very special gift you give to us ! You add loads of context to the theoretical knowledge that remains long after graduating. I always wondered what use it would ever be to me. And now... I see the beauty of it all ! Thank you so much ! You made me 💚 physics !

[@lecturesbywalterlewin.they9259]

My pleasure!

[@wriyaahmed2255]

I am so impressed the way you give glass , I didn't know there is such interesting class that student isn't bored

[@yashwantsarav2433]

Thank you so much, sir, for these lectures. They are very enjoyable, and I find the way you teach using experiments rather than just formulae to be a breath of fresh air.

[@complex_variation]

my gawd Walter, next time I'm depressed I'll remember that such a good man like you lived walked and taught this earth, and feel blessed about it. Thank you for such a lecture.

[@abhishekbhati8278]

Sir I am from India and these physics lecture are very helped me in my jee preparation thank yoy sir for these amazing lectures ☺️☺️☺️☺️ love and respect from India

[@thelife8836]

You have many students all around the world and you are the best teacher. Everybody loves you.❤❤❤

[@SwapnilDeyUCM]

wow never thought a physics class could be so much interesting! Great explaination and more great are the demonstrations!! love it walter sir!

[@hendrikstrauss3717]

An understanding of electrical forces is indispensable for my field of choice, cognitive science. Thanks to your teaching excellence, I am getting really passionate about the physics of, well everything. A little mean tbh as I wanted to use physics for electrophysiology and then leave it for a time. Now I might have to learn much more to satisfy my curiosity :)

[@amitsehgal5437]

Wow! The way you teaches is awesome. I am from India. In Indian schools we are taught these concepts in class 12th and very fast. Much of the attention is given to the problem solving part. Most of the students solve problems but they didn't know the concept behind. Still the Indian students are very much hardworking (also due to JEE Advanced, etc). Sir what's your opinion on this ?

[@lecturesbywalterlewin.they9259]

Wow, thanks

[@saverasharma4176]

Sir, your students are really lucky, you made me love physics, which I hated before, all thanks to you:)

[@rodrigospcs]

I'm currently having Eletromagnetism and Optics as part of my Computer Engeneering course. I'm not into physics at all but your videos make me apreciate it a lot more. You're a very good teacher!

[@abhishekkhatiwada2411]

thank you prof.i am from Nepal studying engineering and it is one of the best lecture I ever had lot of practical knowledge

[@lecturesbywalterlewin.they9259]

:)

[@btsandtxtloverstraykidzfan3486]

I finally fell in love with physics , thanks professor 😄

[@kalpanarms9597]

Oh my god, thank u so much for these lectures. I knew there would be electric fields but never really had a good intuition and never believed it.....but after seeing those seeds align in that way....it really made me happy...... and as always...*physics works* 👍😊

[@rauledom]

Profesor, I recently discovered that you have a KZbin Channel that has all these lectures! You are so good on explaining physics, thank you so much for sharing all these to the new generations. I am an Electrical Engineer with a PHd and I am really enjoying how well you explained Electromagnetism! Thanks, thanks thanks!

[@adrijanandi2813]

You are truly an amazing teacher of physics sir.we r very grateful to have ur lectures on KZbin 🙂 thank you so much☺️

[@lecturesbywalterlewin.they9259]

:)

[@LaugeshariBA]

I am from Sri lanka .and I learn new concepts from all ur vedios and that's really amazing. HATS OFF for your valuable job . Like to be a student in ur clz !!!!!

[@amitmishra2416]

Someone ask me one day how they understand physics I say keep calm and watch prof. Walter lewin😘😘😘

[@lecturesbywalterlewin.they9259]

:)

[@shrikrishanyadav1174]

my daughter really likes your lectures ...they helped her alot. earlier physics was like a puzzle that is now being solved by your help. thankyou soo much!

[@lecturesbywalterlewin.they9259]

+SHRIKRISHAN YADAV excellent

[@Aaditya_raj420]

For the first time ever I've realized the actual science! Thank you for these videos

[@edgypuffer3697]

I want to become a theoretical physicist, this is my last year in high school, then I will start applying for universities abroad (I'm from India FYI). These lectures really help with understanding and getting a firm grasp on the concepts. I really would like to be as good a teacher(if not better than)as you. You teach physics the way it is - "INTERESTING & AMAZING"

[@lecturesbywalterlewin.they9259]

:)

[@ankitmukhopadhyayrgkmch5951]

Students sitting there are attending the most beautiful explanation of nature.....Learning it's way of working from one of the few men nature has bestowed upon with the responsibility of decoding it...I would surely be honored to attend your classes....But it is a dream.....Btw...LOTS OF RESPECT FROM INDIA SIR....

[@toiletprime806]

Ive always know physics was beautiful, but I've never put my mind into actually taking a look at it. I always thought only astronomy was interesting but it looks like i was wrong. Your influence is also so powerful it reached India, thanks a lot sir.

[@Ryan20309]

you are GREAT! there isn't a better word to describe your classes!

[@gauravsidar1885]

Everyone admire Sir Walter Lewin because he is so great. Thankyou sir for teaching in the amazing manner. I would also like to thank the cameramen who had captured the perfect angles for us.

[@rishinigam9070]

Sir wailter one lecture in which he is hanging from rope and swinging proves that mass has no role in determining the time period of oscillation T= 2*pi*√l/g

[@rishinigam9070]

One lecture of sir Walter on which he rubs silk rod by cloth was basically meant that charge can be removed from silk rod by rubbing cotton cloth such that now if we take that rod to any neutral body then it will do polarize that body and body will be attracted because distance difference from rod and it will be attracted same experiment like scale attract piece of paper when u rub with your oiled hair.. Remember use those material in which charge can be removed by rubbing don't use wood other things..

[@thelastmassage8692]

it is a dream for me to do a class like that.Wish I was there! I am from Bangladesh and we can't effort so much in a class. "money cant't buy happiness but money may buy knowledge " 😞

[@lecturesbywalterlewin.they9259]

:)

[@Md-Nasif]

I'm also from Bangladesh :)

[@arpitas162]

Money can't buy knowledge

[@peeper2070]

@@arpitas162 They mean rich people have access to more sources of knowledge. Many children have been born who would have contributed more to Physics than Einstein himself, but they lacked the access to education (either not able to afford it or because of gender/ethnicity/religion).

[@peeper2070]

@@arpitas162 Also you’re watching on a device which costs money.

[@cathyny83]

So much fun in learning about physics from the most terrific teacher, I can't stop staring that scarmble egg!

[@tristntolentino1770]

I learned a lot from this lecture. I cannot put into words how grateful I am. Thank you so much Prof. Walter.

[@lecturesbywalterlewin.they9259]

You are very welcome

[@InminenT199999]

Thank you so much for posting this! Great to see people in love with physics. Greeting from Argentina.

[@ironman8080]

Respected Sir, Who were those two 'men in Black' barging into a room where a great event was being held. Sincerely, My humble 'itching' Curiosity

[@siaripop7]

I believe they were reminding a student about his upcoming Fraternity Pledge!

[@HamedShahbazi]

it's look like more serious than that! something like drug sellers deal !? :D

[@aashishsoni7428]

Maybe just to keep the attention on him

[@purpledoo]

@@aashishsoni7428 ahahahaha

[@bianchialex]

My professor is from MIT and these were great supplementary lectures for Rutgers Honors Physics course.

[@hatzyrihernandez6979]

Thaks a lot! I´ve just discovered your channel and I hope it helps me on my way through my electromagnetism course. Greetings from Mexico

[@dragonheart1465]

Thank you sir, I'm a class 12 student from India aspiring to be a scientist/engineer, this definitely helped me revise my school content.

[@userismad001]

Me too I am in class 12 in India too ☺😁😄😃😀 🇮🇳

[@anuragnayak8327]

Previously I was in love with physics now i am in love with you also ,Sir Walter Lewin. To all viewers :- try watching the oil seed experiment at a speed of 0.25x it's of more fun.

[@stevegiroux2]

I love this guy for his knowledge of his lectures so I won’t be late to get a static charge of electricity in my mind.

[@engineeramir2943]

Very fantastic professor I watch your lectures videos and iam feeling joyful of it . Thanks a lot #Egyptian engineer student

[@aravanand9267]

I like your classes alot sir.thank you sir.

[@akshaykamthe7290]

Great knowledge and interesting personality 😇you made me love physics even more

[@pasupathynathan.b9356]

hi lewin your lectures are very nice and enjoyable I love it learned a lot from you beyond teaching

[@chandra-shrutipatelemc2220]

your experiments help us a lot in understanding the basic concept of physics. thank you so much sir.

[@ritikeshmandal1370]

I hope I clear my JEE next year from your lectures.

[@gurnaj5423]

Did you

[@xyzculture]

bhai kitne mile JEE me aapko?

[@bloodaid]

Excuse me sir, you have an egg on your shirt.

[@lecturesbywalterlewin.they9259]

Wowwww I wonder what happened, but thanks for letting me know.

[@bloodaid]

Np. Thx for the great lecture btw.

[@Sophiedorian0535]

It is a distinctive, of which the location on the body and not the substance referred to bears the significance. Most of Walter's colleagues have egg on their *faces*, not on their shirts.

[@lecturesbywalterlewin.they9259]

ha ha ha

[@Abhisheksharma-lk4ll]

I hope no student in the lecture hall, is hungry.

[@ddeboy002]

thanks for posting these... I love them and the knowledge that goes with it.

[@tzakl5556]

Love your lectures from Hong Kong!

[@mrbasham1]

Massive respect for you Sir from Pakistan. :)

[@alexandraboehmke2102]

"You can always through induction [and deduction!] test the polarity of your charge."

[@srikantur5756]

First time in my life, I m seeing such a interactive lessons from the god of physics.

[@labeebyoussef9116]

Thanks for your immense effort great teacher , i have not imagined that one day i may understand these materials

[@shanboards9473]

Eggstraordinary lecture sir:)

[@rajdipbandyopadhyay1942]

Sir , how to be a great physicist like you? I am now a BSc physics student from India. 😊

[@lecturesbywalterlewin.they9259]

eat yogurt every day but *never on Fridays.* That worked for Einstein and also for me.

[@rajdipbandyopadhyay1942]

@@lecturesbywalterlewin.they9259 oo yeah ! But why not Friday sir ?😅

[@rajwardhangaisamudre]

@@rajdipbandyopadhyay1942 go to a school where physics is taught Don't ask silly questions ^_^

[@gweilospur5877]

Myself and most other physics teachers I have worked with are perfectly capable of teaching this same material in the same way. Actually most of this is just high school level Physics even though he is teaching it to MIT college students whose parents are paying a fortune in fees.

[@lecturesbywalterlewin.they9259]

@@gweilospur5877 Keep in mind that MIT is only a very mediocre University. That's why only 98 people who studied at MIT or who lectured there received a Nobel Prize. *That's very embarrassing.* Luckily you got a much better education.

[@Akash_Hegde]

Great teachings by a great teacher with great demos!!

[@andrewamini6726]

Professor Lewin...I'm a professor also and an Inventor in Mechanical Machines and I love your passion and focus for the field. I believe that one should have the passion that you have to do great things. Thanks for the videos.

[@lecturesbywalterlewin.they9259]

+Andrew Amini you are welcome

[@kavimugilan681]

Thank you for your wonderful lectures professor sir i am NEET aspirant from india.what to do to crack Physics in NEET sir.

[@amazing4ever1000]

i have seen at least 30 of your lectures Sir, which were of course very helpful, and i noticed you wear a fried egg or a banana brooch which is very unique so i want to know what made you do that?

[@upasanasamanta8599]

He actually explains it in his book. It's an amazing read and is filled with the same energy his lectures give off.

[@fathimaalhasnaemajeed5019]

I always byhearted physics and for the first time I am understaanding this . HAndsoff to your work.

[@tianadas6420]

I just love the way sir teaches ❤ and I also love the chalks that he uses .

[@carrapaz3645]

28:05 what the hell?

[@Ace-gw4uk]

I want to study in mit.. Its soooo freakin gorgeous !!

[@vatsal6231]

Platwn Ace First improve your English.

[@siaripop7]

Grom...Improve your courtesy and manners to an adult level!

[@shri.shri.shri.]

Respected Sir,your videos are the Best thing happened in corona..God bless you always .Stay safe Sir... Thank You 🙏

[@hichan5081]

This is not a lecture. This is a whole performance. Love the lecture

[@kenRoberts1984]

Great teacher there.

[@lecturesbywalterlewin.they9259]

+kenny Roberts Thank you

[@kenRoberts1984]

Is this Walter Lewin?

[@lecturesbywalterlewin.they9259]

+kenny Roberts Yes I am \\/\//////@lter Lewin. I run this site.

[@kenRoberts1984]

It's an honour Sir

[@narimancharkie2633]

and that how you have fun and study physics at the same time :D!

[@lecturesbywalterlewin.they9259]

:)

[@narimancharkie2633]

by the way, does this channel belong to Me Lewin himself?

[@lecturesbywalterlewin.they9259]

Yes I am the REAL Walter Lewin and I run this channel.

[@narimancharkie2633]

oh! that's such an honor to be directly contacting you via these comments. I started loving mechanics after watching your online courses and the same is happening here with electricity. Thank you so much!

[@lecturesbywalterlewin.they9259]

You are welcome!

[@bhi_sharma]

Woww... I never take a physics class like this.. love you & thank you sir...❤️😍

[@manisofluit5328]

I LOVE YOU!! Walter Lewin! Thank you for your gift of teaching the science understandeble and easy and fun at the same time! You are a genieus!!!

[@poojyadav7442]

19:13 oh! the chalk break

[@singularcreations2003]

here in india these guys never do practical demonstrations which are highly necessary for better understanding, so i utilise your demonstrations which are so helpful right now after 6 years sir 🙏🏼

[@DerInhaberDerKrossenKrabbe]

Amazing explained! Still years later a very good Video!

[@jaideepgupta968]

Do they teach this in undergrad??

[@yigthekid]

yes, but walter lewin does not teach this anymore.

[@TheJProducti0ns]

Yes i'm taking this class right now. IT'S FREAKING DIFFICULT.... But it's fun haha ~ The reason why it is difficult for me is in mechanics I can visualize the situations while in electromagnetism I can't really see what is happening at the atomic level

[@ironman8080]

Respected Sir, Who were those two 'men in Black' barging into a room where a great event was being held and did they say.... please...can u tell sir.... :)

[@joeydemiane2070]

You Are Amazing🙏🙏 your ways of teaching are so efficient ! Thank you for sharing this with everyone ! High level education should always be available for everyone🙏❤

[@lecturesbywalterlewin.they9259]

:)

[@morningday3707]

Very very thankful to MIT to provide ocw. Because education is very very important. Lack of education gives rise to many difficulties in life ( like very very limited opportunities, superstitious beliefs etc). Also being surrounded by an ignorant environment is like slow poisoning the mind. So thanks for OCW.. And professor Lewin is awesome..

[@paudelshankar]

i am going through each of your lectures. i am afraid will this channel be deleted or removed before i finish all your lectures..

[@lecturesbywalterlewin.they9259]

I expect to live perhaps another 5 years. In any case, after my death this channel will be continued by the famous Professor Lynn Cominsky who is my former graduate student.

[@paudelshankar]

thank you professor , i have no words to thank you!

[@lecturesbywalterlewin.they9259]

:)

[@HarshRajAlwaysfree]

Lectures by Walter Lewin. They will make you ♥ Physics. , I hope after ur death U can find out what's it like to be in a state of death 😊 I'm jealous but not that much But I do wanna know what's it like to be "dead"

[@habibusaidu9393]

Lectures by Walter Lewin. They will make you ♥ Physics. I was shocked when I heard you saying death, wish you long life in this great job u have been doing.