711,000 people viewed this and learned at least a little bit in a very short time. It was a free class taught by an extremely educated man. Imagine the world we would live in if we had this kind of access to every class

@gooddeeds9928

15 күн бұрын

Capitalist will loose their mind unfortunately education should be free for everyone

Notes about lecture: conservation law conserved quantaty allowable laws of physics, allowable rules 25:40 non-allowable law (in classical physics) can't retrodict the past (opposite of predict) non reversable if reversed, unpredictive (don't know this or that comes next) 29:20 predictive one way, not retrodivtive other way not reversable, "I" don't call it irreversable 30:10 classical physics doesn't allow probability conflicts with the rules of classical mechanics quantum mechanics are not deterministic ambiguity in knowledge of initial condition, so from this statistics in classical mechanics despite deterministic 33:30 how precise do you know the initial condition, this determins how far you can predict the future, example three day weather forcast other way around, if you know how far you want to predict, then you can determine how exact you need to know the initial condition 35:50 allowable, if every state has one incoming and one outgoing arrow next example: point particle(s) moving in space 37:30 first some preliminary mathematics vectors, coordinate systems coordinate system: describing space quantitatively space with three dimensions/coordinates but we are perfectly free to think of systems higher dimensioned or lower dimensioned 38:10 we are interested in describing the basic pricipals, so we don't have to restrict ourselves to specific examples a particle can move in one dimension, it can move in five dimensions, but for now we use three dimensions 39:30 three coordinates, doesn't matter where we put the origin, but it's easiest to put it at the (? 0 location) the three axis are mutually perpendicular label e.g, x, y, z or x1,x2, x3 40:00 still ambiguity about the rotation of the axis, which direction they go in fixing the origin, we also have to fix the orientation of the x,y,z axis theres a convention, right handed coordinate system, if you pick x and y, still need to decide is z pointing in the blackboard or out of it, we settle at right hand, x thumb, y inex finger, then z middle finger points out of the board towards us this is the right hand rule another convention, for distance we choose units 41:50 point is labled by x,y,z, thats also how we describe a particle 43:10 what is a vector has both length and direction, for example a position of a point, relative to it' origin, magnitude is the distance, and it has a direction don't think of a vector of being located anywhere 43:55 vector is the same, no matter where it is drawn in space, doesn't need to be drawn in space vector labled by bar on top, more precise a little arrow it could e.g. be velocity, it could be acceleration, it could be an electronic field it's got, length/magnitude, and it's gotndirection 47:55 (see formula) length equals square root the sum of squares of its components adding vectors, multiplying vectors by numbers 53:30 VectA+VectB=VectC VectA*VectB=AMagnit.*BMagnitude*cos(winkel feda) "the calculated dot product" the product of two vectors is not a vector, it's a number 1:00:00 we can display the dot product in component form VecA*VecB=Ax*Bx+Ay*By+Az*Bz, you can prove this with a little bit if trigonometry VectA*VectA=AMagnt.*AMagnit. 1:08:40 The velocity is the time derivative of the position Dot means derivative with respect to time (so this does not have to be writtenover and over again) Velocity is x of i dot (x1, x2, x3 for the coordinates) 1:13:50 acceleration is derivative of velocity or second derivative of xi, so it's written x with 2 dots X - position V - velocity a - acceleration r-Vector for radius, positiin vector 1:16:00 Formula of an object falling in gravitational field with constant acceleration, xt=a+bt+ct2 uniformly accelerated particle, that has acceleration 2c 1:18:00 Circular motion x+y achsis, the angle increases linearly feda=omega*t 2Pi/omega=period omega is the angular frequency X=cos(feda), y=sin(feda) derivatives of trigonometric functions velocityX=-omega*sin(omega)t angle between velocity and position? more on velocity, acceleration, calculated ways for this shown

@seandafny

7 жыл бұрын

U saved my life bro

@CreativeVery

7 жыл бұрын

Lol. It's "Theta" not "feda".

@ANOLAMCA122

7 жыл бұрын

Susskind dinleyen türkler var duygulandım :D

@iahmmei1849

6 жыл бұрын

holy ish dude i cant believe u took the time

@yagmuraljaerhan9804

6 жыл бұрын

Ayıp ettin

49:05 Yes professor, your lectures are like the music that one want to hear over and over again. ❤️

I remember watching videos like these before college, which definitely kindled a passion for physics and math deep inside me. Then I also started reading advanced books, which were not even part of the course syllabus, for example the famous series of books published by Lifshitz and Landau. Among other things, I published the step-by-step solutions to many of the classical physics problems in the first book "Mechanics" in an online course on Udemy (called: "Multivariable Calculus and Classical Physics problems"), which deals with the mathematics and physics of rigid bodies, non-inertial systems, and much more. This is to say that videos like these can be very helpful in inspiring youngsters to appreciate physics.

@mpay2874

2 жыл бұрын

The Udemy course you mentioned is not showing up. Is that still available ?

@math.physics

2 жыл бұрын

@@mpay2874 Oh I see, now it has a different name, it's called "Multivariable Calculus and Classical Physics problems", I decided to merge two courses into a single one, due to the strong connection between the two. So, yes, it is still available.

@aayushpandey6725

Жыл бұрын

I'm in final year of my high-school and I'm slowly starting to love physics. Thinking about studying physics in undergraduate. So, spending my time watching these lectures.

I love this man. The way he explains things, the way he talks, the way he thinks, the way he moves, his wisdom. Having watched many of his lectures, I feel a deep friendship without ever having met him in person. Thank you so much, Lenny.

@YasoHisham

6 ай бұрын

How are u doing now, 3 years later

@mtmind6560

Ай бұрын

@@YasoHisham They got married.

@sisypheanexistence8955

Ай бұрын

​@@mtmind6560a beautiful relationship blossomed after such hard Dick riding

First 16 minutes is the most succinct and persuasive explanation for conservation of energy I’ve sat through. A lot of people tend to explain it through tautologies.

Thanks Stanford. These lectures really get you interested into science and just the aspect of being in a university itself.

Native English speaker and I literally just learned the word 'retrodict' (opposite of predict) from Lenny. The perks of this class are boundless.

@w花b

2 жыл бұрын

Not a native speaker and I learned die and retrodict too

@saikatislam1221

Жыл бұрын

hello brother

Coin and dice configurations and laws of motion, conservation; infinite configuration space 22:00; non allowable laws, reversibility 26:00; vectors 37:30; particle position and motion and acceleration 1:05:30; 2 examples: motion on a line, circular motion 1:15:00;

Extremely thanks for providing such quality content for free of cost and enabling it to be accessible from everywhere. #LovefromIndia

@ThePhysicsConnection

6 жыл бұрын

Nandha Kumar yes this is one of the great things about our world today

@of8155

3 жыл бұрын

❤️

Thank you Leonard and Stanford for this. The extras and insights mean a lot. You could lean this stuff from a Dover reprint, but learning it on a trajectory towards Scrodinger and company really helps one focus on what counts. I have been able to make quantum work for a long time, but I find myself returning to the roots over and over again to regain a sense of what I'm actually doing. I think lecture series like this are invaluable for contributing towards a future in which a significant subset of us understand what the world we can make claims about actually us.

You are the definition of people who are awesome, Professor Leonard Susskind. LONG LIVE Leonard Susskind. We need you like how we need water to live.

@BadAssBradders

2 жыл бұрын

100%

53:30 That little slip from his Quantum Mechanics lectures

@lgcookie1933

4 жыл бұрын

Christopher Soelistyo I know this is a super old comment but HAHA I saw that.

Thank you stanford university for making this free to everyone, i decided to study physics however had (in germany) to decide between chemistry and physics as a school subject, i chose chemistry inorder to at least have some fundamental knowledge about it. Now i figured out that german university have their lectures uploaded however only on private servers which are unacessable to anyone whos not in their university. Thanks for giving me the chance to learn the basics to prepare for university

46:00 When a world-leading theoretical physicist struggles to draw a vector in three dimensions, there's hope for us all.

@user-zk1wf7le2t

9 жыл бұрын

it's normal. My grandfather Ph.D in his 80 can't even draw a 2d vector lol

@mmartin5816

9 жыл бұрын

JLongTom Lenny in perfectly imperfect!

@jeffrey8770

9 жыл бұрын

Даниель Крузе (But u didnt say what area your grandfather specialised in, lol.

@ruskodudesko9679

6 жыл бұрын

not in art ^

@ThePhysicsConnection

6 жыл бұрын

JLongTom haha

These lectures have changed my life! Watching this feels nostalgic!

I really like the book as a companion to these lectures. It gave me deeper insight in some physics concepts that I used to just "take for granted" otherwise. The exercises also help for that matter and I can't wait for a quantum mechanics sequel and the rest of the series.

One of the World's leading Physicists and Teachers, showing how to teach Science

He is always extraordinary..he always find the simplest version of explaination!!if anyone don't understand him,he never understand physics.

Wow. That cleared up a lot for me. I'm looking forward to the next lecture.

I clicked classical mechanics and I'm watching graph theory. This is gonna be good!

jesus this is incredible it's like watching the hulk trying teach someone how to lift a 10lb dumbell

@ryanyoon6772

3 жыл бұрын

Super N0iS3 😂 lol bro

@randomblueguy

3 жыл бұрын

@Andrew Walter III Kaamo 'D La Simmetrie what the fuck

@Joepage69

3 жыл бұрын

@@ForeverStill_Fan1 and physics.

@sadunfdo2888

3 жыл бұрын

@@Joepage69 Don't use phone then. Be a Priest. Without Physics you are still trieng to use Pigeons as mail man.

@Joepage69

3 жыл бұрын

@@sadunfdo2888 physics is very much the unknown that was my point it changes all the time

Could please activate in the video the option of automatic subtitles, that depends on the administrator, if they do not activate the other people does not get that option. Podrían por favor activar en el vídeo la opción de subtitulos automáticos, eso depende del administrador, si no lo activan a las otras personas no le sale esa opción.

Just 10 minutes in, I already have a feeling I'd learn more once I finish watching this vid than 10 hours in class...

Mike from Breaking Bad

@toplobster5374

2 ай бұрын

Now , I can't unsee😂

@IAyala1010

Ай бұрын

Put your pencil away Walt. I’m not having a lecture with you.

@Optimumprime728

Ай бұрын

@@IAyala1010💀💀☠️

@wooshifgay462

Ай бұрын

No half measures walter

Finally I found someone who is going to teach me the concepts in math I need to understand my big love, astrophysics, a little better. That it's such a famous physicist, the better. I'm somewhat proud I still remember and understand most of what he talked about in this lecture although I graduated from high school 38 years ago although I never really needed this since then.

@tomstalley3179

8 жыл бұрын

listen to startalk if you love astrophysics!

@JRush374

7 жыл бұрын

ozdergecko the Closer to Truth channel has a lot of good conversations about cosmology and astronomy stuff.

@puspita282

4 жыл бұрын

@@tomstalley3179 can you comment the link of the channel? or is he a person?

@tomstalley3179

4 жыл бұрын

Puspita Das just search ‘startalk’ kn KZread, it’s Neil degrasse Tyson’s channel

I've never seen a video on classical mechanics that quite starts like this, informative

Last 15 minutes, describing of circular motion, was awesome! Everything become clear!

49:09 Such a good analogy. And yes, Prof. Susskind, your lectures are like good music. Bravo maestro and thank you.

@rickperez8975

3 жыл бұрын

This was hilarious

Highly insightful lectures I ever came across, thank you sir for your work

This guy teaches classical mechanics in one class and can teach string theory in the other, hat's off to you

This is amazing. Big Thanks to Stanford and to L. Susskind.

Professor Susskind, thank you for these videos. Theoretical Minimum Classes suit me to a tee. I really like them.

This is fantastic, thanks to Stanford and professor Susskind :)

1:23:33 Actually, the dot product being zero isn't enough information to draw the velocity vector. The sign of vx tells you what direction the perpendicular vector is pointing in.

This is invaluable, i love learning tho I cant afford to go to a big university

@clairerogerson2153

3 жыл бұрын

In

@Adolfofficial9

3 жыл бұрын

r u alive now

@jolanmoussier9267

3 жыл бұрын

Bad for you to not be french

@tomassanchez6010

3 жыл бұрын

You can apply for financial aid

@vgdfgvv4381

3 жыл бұрын

@@jolanmoussier9267 what?

Once again im glad to find a lecture from stanford to help me learn more

Thanks for the download option. Pleas provide a link to playlist, eg. Classical Mechanics | Lecture 1

Leonardo,your lectures ARE music to our ears

I have a question: Are there exercises (and solutions) that was made for this lecture? I really like Susskind's lectures but I think one can only learn, if you do exercises. So I'd really like to get access to exercises that fits to this lecture. If anybody can give me some hints, where to find such exercises, I'd be very grateful. :)

53:25 HAHAAHA best thing to write in classical mechanics.

These videos are absolutely fantastic. Leonard Susskind is amazing!

For those, who are starting this course..... It's very slow and a bit dull, But it's THE best. He won't show you experiments and stuff , but all your common questions and misunderstanding will be addressed in this course. Really it's the best.

oh its unbelievable... Thank you so much to Standford and this gentle man

Indeed your lectures are amazing everytime we hear them.

I had lost my way and my love of physics due to depression. Decided to take a break from my astrophysics studies for a year. I think I will spend the year going through his lectures just to see if I can fall in love with physics again.

@agrajyadav2951

Жыл бұрын

if u dont love physics, u literally dont want to understand reality, and that's like death

Will he talk about the Hamiltonian mechanics and Legendre transformation later in this course? I am looking for physics underlying Symplectic and Poisson Geometry would appreciate it if you introduce some materials to me.

I would like to thank the professor for his nice and interesting lecture he did!!!!!!!!!!!!

My brain lasted for 55 minutes. Started to watch bits again more to try and understand. Great lecture.

at 19:03, the laws of evolution for die world are categorized by number and TYPE of cycles, e.g. there might be three cycles: one 1-cycle, one two-cycle and one 3-cycle, like his example but there could also be three 2-cycles, so it is more than just the number of cycles - as he hinted.

The book is called The theoretical minimum. Authors Susskind and Hrabovsky. The latter added some extra mathematics parts where needed. Electromagnetism is discussed, Hamiltonians, Poisson brackets etc.

Can someone explain how a boxer imparts force to an object mass with the execution of his or her punch? Is power exerted by means of kinetic energy or momentum?

does anyone know when he goes to cross product? I don't understand why we take away the j-component...

Loved the lecture so much.

53:25 That's what happens when you do Quantum mechanics alot

@emonfromearth

4 жыл бұрын

This made me laugh 😂

@askhetan

4 жыл бұрын

hahah!

@gibson362

4 жыл бұрын

Hey do u know what the general eqn was for the six-sided die? I cant figure it out

@paxtonpoyiposida8901

3 жыл бұрын

Ah my god

@pinklady7184

3 жыл бұрын

Which is easier, classical mechanics or quantum mechanics? I am only just today starting to study classical mechanics.

Im watchign this and I thought of the same thing!! I still havent been able to come up with an equation unless you have some sort of condition to evaluate inputs and return the right answer..you find a solution??

So then let me ask this, if it is in state zero would it also be at absolute zero for the quantum or is it just going to stay at perfect zero

What a great lecture & what a great lecturer.Thx.

13:55 The die could turn into any number of sequences, including REPETITIVE ones, for example.1,4, 5, 5,5, 5. The equation would change accordingly. So, is it deterministic?

According to this source, dice was once the plural of die, “but in modern standard English dice is both the singular and the plural: 'throw the dice' could mean a reference to either one or more than one dice.”

Put it at 1.25 speed. Saved my life.

@MrGoatflakes

8 жыл бұрын

+Klanos 2x and 1.5x for me, but I had to go back to the stuff on dot product and proving the law of cosines cause I was playing Factorio and not paying attention. I love the speed feature of KZread. I feel like I have been robbed of some of my life because I didn't discover it sooner xD

@srirampard

8 жыл бұрын

+Klanos You, my friend are a fucking genius and I would forever be in your debt!

@hicham5770

8 жыл бұрын

thank god i went down here before i saw the vid

@landonazbill122

8 жыл бұрын

Thank you so much!(:

@exxel1701

8 жыл бұрын

Great suggestion. Thanks.

A wondrous lecture in classical mechanics

He look like mike from breaking bad

@digggert

9 жыл бұрын

exactly what i thought :D

@Mahmood42978

9 жыл бұрын

AyoJeffy He IS Mike from Breaking Bad

@Pantera1001

7 жыл бұрын

nah he looks like mike from better call saul

@peterreznikov6464

5 жыл бұрын

Admit

@Spractral

3 жыл бұрын

Was thinking this watching season 5 of community today .. Sounds like him anyways

May anyone tell me what's the Text Book used in this wonderful lectures

it always music to my ears , thank you very much

The point of using modulo arithmetic is that you don't even need to assign value 6 on the dice to 0, because 0, 6, 12, etc. are considered the "same" element (they belong to same equivalency class).

Susskind: *show a group of people how to draw a simple 2-dimensional graph* Also Susskind: *Assumes that the same group of people can differentiate trigonometric functions*

@sirius3333

3 жыл бұрын

@@hiruki8 u didn't get the joke lol. Susskind tries to explain simple stuff and skips over relatively advanced stuff ( students know both) but just the way he is going on

@alegzyi

3 жыл бұрын

@@sirius3333 I think she just explained it further

thank you so much..... I learned many new things about vector's,before which I didn't get even after watching many other videos.....you are awesome...... :)

Confused? Sloppy? Look at his lecture on 'Demystifying the Higgs Boson' - Of all the lectures this was the clearest overview of all of the great rash of such lectures that came out this year. I find the lectures leave me just enough to think about and sort out myself. I am a big fan.

How are vectors and triangles connected ? or maybe i misunderstood. Why does the proof of cosine based on vectors , works in trigonometry as well ?

when i looked at your symbols of T and T+1 i thought from left to right you started at T+1 to T which did not make sense-then when repeating the video hear you say it starts at T "then" T+1- but looking at it reading from left to right it looks like going back in time in progression

Time in nature might not actually be the abstract of perceiving it as going back or forward to actual events but instead are actually the observable chronological movements of objects that are speeding up or slowing down "DEPENDING" on the level(amount) of gravity and perhaps G-force that's constricting or not constricting the atoms that gives the "OBSERVABLE CHRONOLOGICAL MOVEMENT" we all see around us

i'm assuming that maths are used to describe the "non-observable"-the variable we cannot see to verify it's existence and state it's in-What i am asking is to allow the possibility that this concept below "might" have merit

I really feel like a turkey sandwich right now.

@ThePhysicsConnection

6 жыл бұрын

Comprehensiveboy Comprehensiveboy haha

@levi83

3 жыл бұрын

me too

@pinklady7184

3 жыл бұрын

While watching this video, I feel like eating a wrap with chicken, spices, lettuce, sauces, etc. Add chips (French fries).

@lazyboi5726

3 жыл бұрын

@@pinklady7184 Chips. Luvley

@theunusual7631

Жыл бұрын

me too bud

Can you call the different sides of the die phases? And the whole thing phase space?

So In Love With Leonard Suskind.

1:06:15 : the r doesn't stand for radius. The official explanation is that the position of a single point in space can be defined by three different rotations defined in a rotational matrix. So the r stands for rotation

this is such awesome content, thank you so so much !

I am very much interested in mass, acceleration, force, distance and energy. I like this video. He explains in very simple manner.

didn't know mike ermanthraut had the best classical mechanics lecture series on youtube

Nice video quality. What textbook was used for this course, btw?

dear professor can you please enter the English subtitles in his last lessons on the internet. Thank you

Are there worksheets and problem sets which accompany this series of lectures?

Wonderful Lecture, thanks for the laws of motion lecture.

This is the thing with top Institutions... They teach you 'how to think' rather than what to think.

Yes, but perhaps the world is full of people who do not have the same grasp or perspective. Plus, one can never over emphasize the basics. This is what separates great teachers from ordinary ones. I find that a lot of the students brush through the basics and find later that they do not have a deep understanding. The concepts of state/phase space are actually not as simple and are so critical in understanding a lot of the world, it is worth spending some time on. He is a great teacher!

Isn’t the magnitude of a vector the sqrt of the sum of the square of the xyz components? About 1 hr in he says the magnitude of A is A dot A.

Regulate surface temp to know/control weather patterns.

I have a question: I plan to watch all these lectures by Mr Susskind on classical mechanics, but will I get anything out of these lectures without an accompanying textbook? Thanks.

@loctran9742

8 жыл бұрын

+potugadu Yeah, I'm in the same situation and I've found something interesting here: ocw.mit.edu/courses/physics/8-09-classical-mechanics-iii-fall-2014/readings/ Hope that helps!

@potugadu5160

8 жыл бұрын

+loc tran Thanks. Honestly, I prefer not to read a textbook. I am neither looking to pursue a career in physics nor knowledge of physics required for my job; I am just curious about theoretical physics. So, I wanted to know if I can get by with just watching the lectures. I am willing to put pen to the paper, though. I did calculus based physics in high school & for a quarter in college long time back, and I consider my knowledge of physics & calculus still pretty good. BTW, lot of reviews of Landau & Lifshitz on Amazon state that it is not a beginner's book. A book by Georg Joos was recommended instead.

@loctran9742

8 жыл бұрын

+potugadu Totally right! Landau is horrible even for the ones who study physics =)), it rather be a doc for reviewing when you've already cover all the stuff, I think. If you want to dig (but not too deep) in the physics, Taylor's or Thornton & Marion's would also be a good option. Or you can wait until the Edx have this course. It's well-fitted to those who prefer self-study, especially to study without reading textbook. :)

@potugadu5160

8 жыл бұрын

loc tran Thanks for recommending Taylor's book. Read reviews that it is a perfect book for self study. An edx/online course on theoretical physic will be great for learning with some structure & discipline, and also to finish the learning/course in fixed amount of time. For me, any study/learning with no deadlines means never completing the study.

@THEGREATONE420

8 жыл бұрын

+potugadu the best accompanying to this playlist is Susskind's book "Theoretical Minimum: What You Need to Know to Start Physics. and for the playlist on Quantum Mechanics is his other book.

1st of all. Thank you You are one of the greatest teachers I've ever come across. You love this Sh*t and it shows. I have one question. Do you mind showing me the equation of the simple rotating dice example. The one where 1 goes to 2 which goes to 3, etc... I apologize I am but a lowely plumber and electrician. I have been extremely interested in general relativity and quantum physics for over 30 years but the equations are over my head. Thank you

how do you not confuse the dot with a times symbol

Well I am a high school student and I am glad that some great universities give a way knowledge for free. I love Walter Lewins Videos he is a great lecturer but they are limited to classical mechanic and electromagnetism. nothing complicated just freshmen's physics.

carrying on from lower post ,if a speed is constant then i'm intuitively confident that the G-force will remain and acceleration would "NOT" be a factor "IF THERE ARE NO OUTSIDE FORCES LIKE ATMOSPHERIC FRICTION"-An example would be the vacuum of space that would not require acceleration to continue the G-force effect once the optimum speed has been obtained- -So provided the atomic clock that slowed in the plane had continued motion(IN atmosphere that creates friction acceleration would be needed for constant speed "BUT" in vacuum of space "ACCELERATION WOULD "NOT" be needed for continued "PALPABLE/OBSERVABLE" G-force effect once the optimum speed is obtained) the atomic clock's movement of atoms "MIGHT ACTUALLY" be constricted by a miniscule G-force effect , thus slowing down the chronological movement of hands or digital face-Even light is affected by Gravity (as in gravity lensing) and i should imagine it's restriction would include anything observable by us-In the "MOVING" airplane cabin air and other unseen things may be the "OTHER" key factors interacting with motion to create the miniscule G-force effect that restricts the movement of atoms in atomic clock that creates the slowing down of it's actions as a clock-THIS might be the reason for time slowing down when movement is applied "OR" extreme gravity is applied and not the classical idea of the ability to go forward or back in time to see past or future events-THE black holes theoretically churning out constantly huge numbers of these gravity repeling particles and any matter with gravity to cause the expansion of the universe- "raw" Quantum particles which are in unusually small size repelling gravity and any matter with gravity(unlike the ones on earth )

is it true that in a g-force simulator if you keep it at a constant speed of say G4 the g-force will not apply??-My reason for this is what if time and space which einstein used to describe the slowing down of time could just simply be because the atoms within it's volume of space(space which could be the meaning of space as in time and space) are so compressed due to say g-force so that they are constricted more and more slowing down their chronological movement-What i heard was that an experiment of atomic clock ,each on a plane was synchronised and the "clock on plane that moved" slowed down compared to the stationary one-Would the forward force in physics of "for every positive action(forward motion) will create an equal and opposite reaction?? this might mean that the moving clock might experience a miniscule G-force or some other restrictive force ? If so then that constriction of miniscule G-force might constrict the volume of space for the atoms to move around in atomic clock slowing it down compared with the stationary clock?-If i heard correctly Einstein "predicted" that the closer you go to a black hole the slower time slows down-Wouldn't that be just a description of every atom that creates chronological movement is slowed down because even their atoms in molecules are "constricted" OF SPACE due to gravity and the G-force "forward" movement??-Imagine a person stuck in a very small closet that constricts his movements -To the observer it seems to show the slowing of chronological movement of his body to slow or even "STOP" -If atoms have a "CONSTRICTED/CONGEALED VOLUME" to move in then the movement of atoms will slow or "STOP"!! So the entire observable object would seem to slow and "STOP"!! --if a speed is constant then i'm intuitively confident that the G-force will remain and acceleration would "NOT" be a factor "IF THERE ARE NO OUTSIDE FORCES LIKE ATMOSPHERIC FRICTION"-An example would be the vacuum of space that would not require acceleration to continue the G-force effect once the optimum speed has been obtained- So provided the atomic clock that slowed in the plane had continued motion(IN atmosphere that creates friction acceleration would be needed for constant speed "BUT" in vacuum of space "ACCELERATION WOULD "NOT" be needed for continued "PALPABLE/OBSERVABLE" G-force effect once the optimum speed is obtained) the atomic clock's movement of atoms "MIGHT ACTUALLY" be constricted by a miniscule G-force effect , thus slowing down the chronological movement of hands or digital face-Even light is affected by Gravity (as in gravity lensing) and i should imagine it's restriction would include anything observable by us-In the "MOVING" airplane cabin air and other unseen things may be the "OTHER" key factors interacting with motion to create the miniscule G-force effect that restricts the movement of atoms in atomic clock that creates the slowing down of it's actions as a clock-THIS might be the reason for time slowing down when movement is applied "OR" extreme gravity is applied and not the classical idea of the ability to go forward or back in time to see past or future events-THE black holes theoretically churning out constantly huge numbers of these gravity repeling particles and any matter with gravity to cause the expansion of the universe "raw" Quantum particles which are in unusually small size repelling gravity and any matter with gravity(unlike the ones on earth

I am in +2 and have mastered differential equations upto second order differential equations can i take up this course of classical mechanics

I agree, Lewins is a great teacher as well, he's awesome.

@smashu2 You forgot to multiply 2AB by cos(thêta) before substracting it to (A^2+B^2).

my like was the 7,000th. feeling very special.. lol Stanford, thanks for sharing these priceless knowlege with the world..

So, you have to have 4 or more points in space to add a third direction other than forward and backwards. So 1, 2, and 3 points can only move forwards or backwards, 2 dimensional. The 4th, leads to inter dimensions?

@yansayidiyegrace854

2 жыл бұрын

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Searching Amazon for dental pliers to pull my molars. Thought I grasped the concepts from Dr. Lewin. Going on to a different concept of grasp.