8.01x - Lect 1 - Powers of 10, Units, Dimensions, Uncertainties, Scaling Arguments
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- čas přidán 6. 02. 2015
- Powers of Ten - Units - Dimensions - Measurements - Uncertainties - Dimensional Analysis - Scaling Arguments - Great Demos
Lecture Notes, Thigh Bones (Femur) of Mammals: freepdfhosting.com/3941a8e115.pdf
Assignments Lecture 1, 2, 3 and 4: freepdfhosting.com/614a811c6d.pdf
Solutions Lecture 1, 2, 3 and 4: freepdfhosting.com/90c2930d13.pdf - Věda a technologie
I have homework to do, why are your lectures so addictive???
😂
They are dude!
Same here 😂😅
Bro it's the first one😐
Please tell me book name which essentinal for course?
A Measurement without the knowledge of Uncertainties is Meaningless.
- Walter Lewin sir ♥️🙏
Excellent
@@lecturesbywalterlewin.they9259 Thankyou 🙃
@@lecturesbywalterlewin.they9259 ❤I discovered my own theory is called " Joshi effect ' for prove time is tool on certain terms
I have graciously quoted Dr. Lewin as an RF Engineer when working with Test Engineer on systems I've built more times than I can count. Such a beautiful and meaningul quote which will remain true and prevalent FOREVER!!!!
@@lecturesbywalterlewin.they9259 Sir!
I am a physics aspirant. I dream of becoming a physicist since I was in 4th grade. I love reading and would ask for a beginner who knows the basics of the theoretical fields but is still learning should he read your 'love for physics' or The all of 'The theoretical minimum book's for a better view at physics.
Got those mad chalk skills. That's how you know it'll be a good series.
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"I want to bring this to a test" - that's what makes you different from ask other teachers. Hats off.
I'm not majoring in physics so i really love that you are providing this lectures for free and to everyone. It feels good to study something you won't have an exam about.
Thank you again sir.
:)
Well said. Exams can be quite a dissuading factor
For free and that is a great price!
That's for damn sure, makes it feel so much more rewarding and pleasurable where there is no daunting expectation.
@@bane8956 the price he had to pay
My dream was theoretical physicist.
Now, because of your wonderful lectures, my dream is theoretical physicist and a good teacher!!^^
good luck!
Hello what are you doing now in physics ? Please tell I wanna become a researcher in physics
@@yagnikdhameliya6332 Now her dream is to be a waitress at a McDonald's ... jk 😂
@@yagnikdhameliya6332 I hope she's really a physicist. I like it when people follow their dreams.💛💫
👍
I could not afford to attend MIT, even in two lifetimes. Thank you for uploading these lectures.
mit gives full scholarship for students who cant afford
you can get a scholarship. you deserve it, it's there for people in your situation. don't use that as an excuse to not go. you can be apart of MIT if you really wanted to.
Hello Sir love from India 🇮🇳 We Indians have a lot of respect towards you and see you as an inspiration
Thank you 😊❤
Yeah ☺️☺️
Thanks a lot sir. You are one of the greatest teacher whose work I have experienced. Your videos are helping millions in the world. Long live sir. Kudos.
Thanks for your kind words
Lol. He has only got 160 000 views so not really millions. just messing around. Thx for the great video
Samarjeet Saluja no he has 11,951 532 views in total.
@@lecturesbywalterlewin.they9259 Sir can you explain me why a magnet levitates on superconductor even if it was already placed during the process of cooling .
According to the Faraday's law if the magnet was stationary on superconductor the rate of changing magnetic flux must be = 0 .
But still a current gets induced in superconductor. Please answer me with this.
@@wason780 he is dead bro
I wish if I had a professor like you in Egypt.You sir opened a new passage in my mind to rediscover any thing and every thing .thanks
thanks for your kind words
@@lecturesbywalterlewin.they9259
He speak right
You are an excellent professor of physics who explains Theoretically and practically
We do not find anyone like you in Arab countries,
*You give hard work ,for free and for every one
Thank you sir
do not forget Dr. Ahmed Zewail, the Egyptian one , who won the Nobel Prize in Physics's,
Dear Professor, i wish i had such great teachers in school(currently i am in 12th grade),who not only read smth from book ,but apply their knowledge on practical examples. My major is CS,not physics ,but the way you can explain science by referring to interesting phenomenons is astounding and makes me explore new field.Thank you!
U r the first teacher in my life who wants that their students love Physics
U r great sir
Are you from Vidya Niketan or Vidya Mandir School
Thank you Dr. Lewin. you are really a legend in physics. i am blessed that i born in your era, so that i can learn from you physics.
+Sherly Shaju excellent
+Sherly Shaju if you born in his era you will not be +Sherly Shaju and you may not have the same aim which you have now.
Your lectures were a huge influence on me back when I was in high school (2010-13). I am from a third-world country and didn't have that many great resources back then. But your high-quality courses and a few others were freely available on OCW. Now, I am finishing my PhD in math. I thank you and MIT for making this accessible to everyone across the globe!
Thank you sir, i am a NEET aspirant in INDIA and is thankfull to you and Alakh pandey far providing such an excellent content for students, thank you sir !!!!
Did u got selected in neet or not
@@tecver8433😮😮😮bro even me neet aspirant but this videos are very interesting
@@tecver8433that's the question...!Actually i am too preparing for NEET 2024! And you are so late on this video like you are studying the 1st chapter....you are ded brooo! No revives
@@MeRoasts neet aspirants can be in grade 8,9,10,11,12 . Most people start from 11th so highly doubt anyone in their 12th are watch the first lecture. unless you are.
@@MeRoastsneet was today..... How did it went?
[Date i wrote this comment 5 May 2024]
Whenever I don't understand something that I'm learning in Year 11 physics, I have a look on this channel to see if there's a lecture on it. Thank you very much for providing all this content for free!
That's great!
Wow studying units & dimensions was never this interesting before, totally loved it ❤️
Sir I am in Grade 11 from India. I have also developed an interest in Physics and trying to get better at understanding it by watching some videos. But your lectures added a whole new dimension to the way I see Physics. The vigor and enthusiasm that you showed in experimenting your assumptions really moved me. Other teachers work with equations, but you really proved that those equations and measurements are not lifeless and how the uncertainties are so important for measurements. I hope you keep your amazing work going that teaches such valuable lessons for free to everyone.
did u pass jee did u do ittt????/
@@TvishaGoindidid he ever say he was preparing for jee?
Thank you so much, seeing how an expert does physics is an exceeding privilege.
The first lecture was quite wonderful sir . I am from India and right now preparing for jee 2025. MY aim is for AIR 1 in the whole of India. The lectures are very reasonable and practically interesting that I can understand physics in depth now as of before (I wasn't able to understand at all)
If you watch these lectures with honesty then you definitely score full marks in physics in jee advance and mains
I have to say I've never seen a more interesting way of teaching physics before it's so nice and engaging.
I am a physicist working in Brazil and your lectures show that is perfectly possible to be a good researcher such as a great teacher, indeed. You are a example to be followed.
Probably the best physics teacher of all time, that fact that his lectures are freely available is such a contribution to society - Thanks!
One of the best Physics Lectures I had ever seen. I love how every concept is explained in immense detail and learning has been made accessible to students all across the world..
No one can teach physics better than you sir ❤️ 6 years later I am studying from your lectures which never gets old🙏🏻🙏🏻
It's my pleasure
I m watching this after 6 yrs and still this is the best video ever .. I am in love with the way you explain us sir Thanks a lot :)
As a retired university psychology professor I started studying physics about 5 years ago on my own. Your wonderful lectures have contributed greatly to my understanding (such as it is) and love of physics. Thank you.
I wish to study Physics, but it is not an area of great opportunity here in my country. The education system is solely based on solving exam questions and memorizing formulas and so I hope to continue my education abroad. Seeing this channel and watching its videos has truly made me hopeful for my academic career. It is really a breath of fresh air to be taught the backgrounds of the things we study AND have them backed up by experiments! Thank you so much for making these courses available here on CZcams, you truly are the best!
Hlo bro,
This is the same situation of india...regarding educational issues
Did you succeed?
Lol same in India, it's just exam exam exam exam
I like how the lecture starts from scratch. I hope it will be the same here in India for science students, it really helps.
I love how he first throws out the imperial system and uses the metric instead. True European.
Hello Professor Lewin, I hope this message finds you well and in good health. I just wanted to say thank you so so much from the bottom of my heart for all the effort you've put in creating your lectures and making physics enjoyable for me and many other people who have otherwise never had much interest in it before. Your passion for the subject, even up until today, is extremely admirable. I've been using your lectures to prepare for my upcoming AP Physics C classes and I've always found myself either laughing, scribbling notes, or nodding in agreement. I've seen very few teachers that are capable of making their content so digestible, engaging, and entertaining to the extent that you have with your 8.01, 8.02, and 8.03 lectures. Even if you are physically in your 80s, your mental youth shines through you like a star. You truly are an inspiration.
Sincerely,
Alex
:)
Thank you so much sir for making these videos Available on the Internet , I really love the way you teach , it builds my Interest more and more and also curiousity to discover something new from it , lots of love and support .
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 🙏
Hello Professor!! i already watched few lectures of yours and you truly inspire me and made me see physics from your side!! so I `m here writing to you to, seek blessings from you to take up your course from 8.01 to 8.03. and clear my med-school entrance exam ....hope I succeed in the goals set...
Sir, I am studying in class 11 and I am so excited to explore more education from you in physics
These Lectures Are Awesome Mr. Lewin, I'm just 11 years old and I can understand your lectures as clear as water. Keep making these kinds of lectures Mr. Lewin!
I admire your passion for physics very much sir!!! You have such a wide knowledge in it too!
That was the most fascinated lecture I've ever seen in my whole life
I never thought I would be interested in physics as a way of understanding the life around us, and not just some lectures which I'm obligated to study in order to pass my exams.
I wish I've watched this 7 years ago, but it's never too late.
Sir, thanks a lot.
:)
love from India with great respect sir.....
The moment you wrote the values of h1 and h2 with three decimal places each, is the essence of this lecture, which is also in conformation with the statement- 'Measurement without uncertainly is meaningless', that's all I learned from this lecture.
Thank you very much, Sir!
Greatest teacher of all time including Feynman ☺️☺️I enjoy his amazing lectures.... thanks sir for all your videos
I'm a chemistry student from the UK, but my interests lie moreso towards the theoretical and physical fields of chemistry - so, the content covered here is immediately relevant to me. This, along with a number of other physics and maths courses, I am using to supplement my learning over the summer and prepare me for further chemistry studies come this September. I want to thank you, Professor Lewin, for having an immediately infectious enthusiasm for the subject that you're teaching, such that I am but only 2 minutes in and already wanting to watch more. I also want to thank you for making this content so accessible, and making it a genuine pleasure to watch and learn. I will certainly be fully engaging with both physics i and ii over the summer, and I will most definitely be attempting the assignments and exams linked.
Thank you for all your work again, Professor.
My assignments that sir provided aren't opening..can u suggest me how to get access to that beautiful notes , assignments and solutions pls.
5:33 A measurement without knowledge of the uncertainty is meaningless.
:)
Masterful! One of the best Physics teacher ever.
I just discovered this channel and I'm completely in love.... my chemistry teacher recommended this because I said him that "I lost my love for physics" and now I think I can work it out..
you are a great lecturer.... Thank you...
I really thankyou Mr proffessor. Walter lewin sir...
best lecture ...(watching in 2020)
edit: Love from India.
This makes me wish I was smart enough to get into MIT and watch these lectures live
I am 17 years old Indian student. I have dystonia which restrains me to do many physical activities. I found my love for physics when I was 13 being fascinated by black holes and decided to become a theoretical physicist since then. Currently, I am preparing for JEE 2021 mains not for admitting myself in an engineering college, but just to get a deeper understanding of physics and math. I was hoping if you can give me some career guidance and what should I do further.
I think your lectures are where the concept of physics actually unveils itself.
Love your lectures!
This dimensional analysis is so much better then the "conversion factor" bs in chemistry
I learned a very important lesson today, always write down the uncertainties. Uncertainties to physics are like Simpson's paradox to statistics.
“Any measurement you make without knowledge of its uncertainty is meaningless” (Lewin) is by far and without question one of the most rudimentary but also most meaningful quotes I’ve ever heard. As an engineer, this is a concept that alludes so many of my peers whom have consciously decided to stop learning after getting their BS “EE” degree (pun intended). Here I am a decade into my career, working in my Ph.D in EE, and I still love watching his videos as much (if not more) than I did when I first watched the Physics I playlist.
From an accountant, Your videos are helping me a lot to learn physics :) . Greetings from Egypt.
I'm an incoming prefrosh at MIT and struggled quite a bit during my physics class in high school. Your videos have really helped me fall in love with physics. Thank you so much, Professor Lewin!
Best of luck!
I think Im gonna top this year because of him, literally I had fallen in love with physics after watching his lectures..
Professor Lewin is one of THE BEST physics Lecturer . I love you so much ❤ I dont STUDY physics through your lecture ...I FEEL it. It never feels boring when you teach it. I wish I was there face to face with you at MIT...
37:54 the voice of knowledge and experience. Kudos!
I am senior in High School in Michigan, and I am fortunate enough to have an excellent math and science department at my school. That being said, I take what I learn in class, and come home and watch your lectures that correspond to the lessons in class, and it enhances the knowledge I am able to absorb exponentially. I am wondering how you were able to secure such a position at MIT; what were the steps you took to kickstart your career? I will be attending Michigan State University to major in Mathematics and Astrophysics, and in the future I can see myself in a position similar to the one you held. I want to go into research and have the opportunity to teach at a major university someday!
My life story is in my book "For the Love of Physics"
yea zach, i went to pioneer. u sound pretty dumb
You are a genius professor!
Thanks for uploading this video. Surely I want to be as intelligent as you are..
It was the first time i am enjoying physics and not learning it. The lectures was far better my teacher it was really awesome to experience your teaching.hats off....
The best teacher in physics is u and u will always be in our heart .may u be happy and stay healthy all along
This man is a great teacher.
8:05 was hilarious
11:49 famous walter lewin dotted lines
Great great respect to you sir i m studying frm ur vdos after 8 yr , really very helpful everything is crystal clear thank for providing lecture on you tube 🙂🙂🙂
You are great Sir. Really your all lectures are like a beautiful event.
Thank you so much..
I'm 22 now and fell in love with physics because of this man again.
Ahhh..me too
Thanks a lot professor. I'm studying by my own schedule, and i'm trying hard to learn physics the best possible way, considering my uncertity of the "measurement" of which one is the best way 'quantitatively' speaking hehe, but / and i can say your lectures are, at least, amazing.
thanks!
Very thanks Mr. Lewin for you lectures. These lectures will be a great help for my academy and personal growth. Excuse me for my English, I'm from Colombia and I'm learning English since the beginning of the Covid 19 lockout in my country.
thanks, I've only studied via text books, and mathmatics, but when I tried to caculate and try to predict your experiments, it really helps me
Hi, I was wondering what book was used throughout this course?
8.01
Physics
Hans C. Ohanian
2nd edition
W.W. Norton & Company
ISBN 0-393-95748-9
8.02
Physics for Scientists & Engineers by Douglas C. Giancoli.
Prentice Hall
ISBN 0-13-021517-1
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
+Lectures by Walter Lewin. They will make you ♥ Physics. ...sir I salute your humble ness 💞💞💞💖💖💖✌👏👏👏👏👏
Lectures by Walter Lewin. They will make you ♥ Physics. Thank you so much for your efforts professor. Are there any good alternatives to Hans ohanian book? It seems hard to get here. My goal is to understand physics and to do research in fluid physics(theoretical). Please provide any directions and I have no problems with math.
sir,can i get these books for free? i cannot afford these books it costs a lot and i also a poor.
cracking pirates you can search for libgen io or libgen rus, it has free collection of books
Thank you for inspiring me to learn physics. I'm so glad I was able to find your videos. Lots of love from Mexico
thanks you Racki for your kind words
Don armando? jajajaja
i always loved physics.. it made some sense to me.
But your lectures have made physics alive .
I can see physocs with my eyes.
Ooouuu yeaaaaaahhhhh 😍😍😍😍
Loved it professor
The Theoretical physicist in me is over the moon nowwww..........
i was already obsessed with physics and finding the thories that govern the universe.. u just made me even more obsessed😍😍😍
I am in 8th grade right now and I want to become a theoretical physicist so I thought it would be good to learn the topics right now so i finished calculus and started the MIT lectures on classical mechanics. I have been learning from 8.01SC and 8.01x and i really like the way you perform a no. of experiments and demonstrations in your lectures.
Curious?
Crazy 'bout physics?
See every single aspect of life in a different way?
Want to convey your thoughts but do not have the appropriate knowledge to express it on paper?
If you have all these things
You are a theoretical physicist.
All you want is a platform
Nice, this forms my favourite time killer AKA high density gravity creator moment. :)
Thank you for the uploads...
First comment on this channel
This is beautiful explanation of physics.
I am enjoying it from the first lecture!
Thanks a lot!
Thank you for this great lecture Professor Lewin!
I'd cordially like to thank you for making me fall in love with physics ❤
:)
Thanks a lot!! I graduated from Gallaudet University in 1990 and received B.A. degree in Computer Science but... I forget to take that physics courses (PHY 151/152) because I learned about game development that requires knowledge of physics. Also, I am developing my own orbital flight simulator (space simulator) myself. That's why I am now learning about physics as self-study. That is very good lecture!!
:)
I'm so glad that i reached upto this video. Thankyou very much sir, greatfull to have you.
Excellent lecture of physics.I am a collage student whom studying in Macau University of Science and Technology major in CS.I had to admit that the way of your teaching is very interesting and meaningful ,and this class help me a lot.Thanks for your lecture.
I can literally watch these lectures all day since i Don't know but sir ur lectures are so addicting and the plus point is being a neet aspirant here😭
Hey you're preparing for neet 2024??
"world class" content
I am in 11th
I have watched your lecture.
And i got this wonderful, U r the teacher who explain theory with experiment and i hv never seen before.
Thank you so much,
Long live
Lots of love❤, Arfa
I don't even know if I'm going to take physics, these are just super interesting to watch!
Sir thank you so much for providing us with a rather New and intriguing DIMENSION to explore physics. I'm so glad to watch your videos :)
+Soumya Mishra You are welcome :)
8:32 never knew Adam Sandler studied at MIT
This is absolutely amazing. Its both amazing and sad that the best 40 minutes of learning I ve ever done were at the hands of youtube.
I am in the first year of middle school and I love physics .. I told myself that since I love it, I should learn it outside my school studies as well.. Your explanation is very cool
If we had a tr like you in every school in india , many students didn't need to go to any special coching for jee exam .
CZcams recommended me after 6 Years🥺
Love your lectures. It is a global treasure.
Sir really looks amazing and his communicating skills is great
I am watching these for jee 2022 💓
Believe me it's very helpful and worth your time if you are an aspirant too👍🏼
yes brother, walter lewin's lecture very helpful in preparing for neet/jee
Now if only I could have similar teachers in chemistry too :(
Same here bro 💖
@@ishantsharma7148 For chemistry nucleus hod's are the best you won't regret and you will fall in love with chemistry
Results?
Thanks sir here a jee aspirant who took almost two years to be fully furnished with vectors to electricity you just brought that in few hours..you are a real gem . thanks again sir
Now how you are ?
Sir your lecture starts from the basic then it goes up like stairs that's the best part of your lectures sir.
What a motivation!
we never got one like you, in ethiopia.
At the 22:05 the end of femur argument - does this indicate that Galileo's argument is not right and the limiting factor is d/l should be with in certain limited range
yes he was wrong
Who else is wondering where the error was in the argument that d/l is proportional to l? It looked pretty convincing.
The data seem to show that d/l is pretty close to a constant, or put another way that d is proportional to l. One explanation could be that the strength of the bone material varies between species (for example one animal might have a more hollow femur than another). We might also need to consider how the animal moves. For example horses pound the ground quite hard when they gallop at top speed as opposed elephants which don't seem to need to run as fast, so the pressure on the femur is not only proportional to the mass but also to how much the animal accelerates.
@@lecturesbywalterlewin.they9259 Well I assumed that the reason the d/l ratio didn't work out the way we assumed it would is because of the fact that you cannot compare an elephant to a mouse (a (hypothetical) scaled up mouse isn't an elephant by any means. It's just the same size as an elephant. The bone structures, amongst other things would be very different). I'm pretty sure the square-cube law works if you consider the same species. For example, that law says that King Kong cannot exist (apes cannot be that big)
Notes (don't mind me)
2:58
4:22
6:08
10:47
13:04 [scaling size]
15:00
It's 2022 i am watching these they are great and sir you are really The God of Physics 😇❤lot's of love from India and Engineers of India. ❤❤
You're phenomenal sir , i always found physics boring because of the teacher in my school you really turned physics really interesting for me , made me realise that physics doesn't lie only in formulas . Thank you so much i really wish if i could meet you someday ❤
I want to know what Zach is doing these days...
Is he in MIT?
😂😂😂😂
What about the ryder ??
Thanks sir