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From: StanfordUniversity
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  • Why does it have to be in 480dpi? Isn't that stupid?

  • @TTSSATTSR If you know what i'm trying to imply.Well in design the whole scientific theory maybe be flawed,because mathematic is flawed (by the way that is not an oxymoron ).Mathematics and science is provisional like the rest of the World.(Darn, this is making me sound like a conspiracy theorist).We,humans, are never a good judge.We can't differentiate what is right from what is wrong.We can't differentiate what is the truth what is the fabrication.What we are,though,an aesthete.We love beauty.

  • @TTSSATTSR Well,string theory is hypothetical, like its name have implied.However, as we have known string theory was full of loopholes--it could never be able to explain the whole universe (yet), like the rest of the other theory.What a large sum of physicist sought right now is a 'Theory of Everything' no other theory came close to unifying the four forces, string theory(more accurately M-theory) was the closest one so far.I'm not exactly a proponent of M-theory, i'm more of a particle person.

  • @StanHowser There are people who understood mathematics-truly understood it- however,it's of great regret,that only a handful do.Mathematic is an art-an abstract art-only a few can grasp its beauty.Just because you were bad at mathematics(An assumption I made after you had told the world that you 'barely passed probability/pre-algebra',which is menial even for a highschooler) you don't have to come here and flame the few who understood it.String theory is a beauty,contrary to "StanHowser"...

  • @BonhomieGandalf I know I'm going against the grain here, but I never understood why strings gained such popularity. Beyond the elegance of the idea it's overly fiddly and terribly unrefined. Beside initial promise, it doesn't offer much.

  • Why would anyone find this interesting? People pay to go to college for this crap?

    I finished high school barely passing Concepts of Probability/Pre-Algebra.

  • @StanHowser They pay for this so they could expand their knowledge and become future scientists that would revolutinize science. Without science (like Quantum Mechanics) you wouldn't be using a computer and we'll be living like cavemen prying to the sky for shit to happen.

  • @StanHowser there are 10^100 reason to ask that question you may not have the intelligence to understand them

  • 20m16s FINALLY! This is the ABSOLUTE VERY FIRST time I have EVER heard of the MOTIVATION behind string theory. Yes, we've all heard a billion times before: it is meant to resolve the conflict between relativity and quantum mechanics. I get nauseated seeing pop physicists like Kaku always given a free spotlight on pop science tv shows indulging himself in the pleasure of "vibrating strings". But, Susskind is the VERY FIRST I've heard for why STRINGS, rather than boxcars or tubules.

  • Am I the only one that wants to go to this school just to learn this? Too bad my grades don't support my want.

  • This prof is all full of him self reasonably so. But still it's kinda funny.

  • Favorite word: Interesting

  • This shit is cake.

  • I'm only 14 and think this is pretty easy. Watched all lectures and understood them all, next.

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  • @1Mperios Anyone can understand it....have you solved string theory? Din'dt think so.

  • @TheMidwestsk8ter not even closely interesting in solving that, I'm currently working on bigger problems.

  • @1Mperios Sure you are..What are your bigger problems?

  • @TheMidwestsk8ter quantum entanglement characterization, the question is on how to characterize entanglement as a resource and how to interconvert various entanglement form into others. While the problem has essentially been solved for two-party-entanglement, many open question subsists in n-party-entanglement.

  • @1Mperios Are you trying to create an energy source out of it or something? Thats no where near more important than string theory.

  • @TheMidwestsk8ter LMAOOO I was joking bro, I'm not 14 and I'm not working on anything. Merely observed that a few people got pissed of at 14 year olds commenting those things so I just played along to see the response haha

  • @1Mperios Who got pissed off? I'm the only one who responded to you...

  • @TheMidwestsk8ter not you, the previous posters

  • @1Mperios Lol have a nice day sir

  • @TheMidwestsk8ter you too mate

  • I Love The Video It Can Increase My Knowledge He is a world renown theoretical physicist and uses graphs to help demonstrate the theories he is presenting.

  • Good, I like that you share this video, I wish success always He is a world renown theoretical physicist and uses graphs to help demonstrate the theories he is presenting.

  • "To whatever basketballs are made out of" lol

  • I had to watch this a few times to understand everything.

  • My friend thinks string theory is a bunch of hogwash. He thinks it's science fiction. I can't wait until its science FACT! I'm going to rub it all in his face. I wonder why he doesn't believe it though... I'll ask him!

  • @natlantis56 Haha well I'm sorry to say but your friend is probably a Neanderthal.

  • @Humaan2012 I agree! I am 13 and not afraid to admit i am not a prodigy! just simply a smart kid watching to one day help the world. now whenever i see one of those "IM 15 AND SO F****ING SMATR THN U" comments i want to tell them this. the only thing that seperate the smart from the dumb is common sense and if you brag about being smart you have no common sense just to shut your F****ing pretty little mouth and dont brag and since you wont have any common sense that means your NOT F***ING SMART

  • @mojo45678 You don't have to boast about your intelligence, but I'm pretty sure it's your duty as an intelligent human being to get the ignorant either educated or removed from discussions (which starts with telling them they're a fucking dumbass).

    I mean, if you can hold a reasonable argument with fairly good English, then I'm not going to bash on your opinions. But if you're going to make the most terrible assumptions and spew insults, somebody has to tell you to GTFO.

  • @mojo45678 You don't have to be a prodigy to stop typing like a dipshit.

  • What level of teaching are these lectures at when compared with the English teaching system? E.g. GCSE, A-Level, Bsc, Msc??? Thanks.

  • he lost me at mezzons

  • @GyroFactor then just rewatch it until you understand...."there is no such thing as a dumb person"....

  • IM 15 AND I UNDERSTAND ALL OF THIS PRETTY WELL BLABLABLABLA STFU!!! YOU CANT EVEN UNDERSTAND 0.000009% OF THE MATHS INVOLVED IN THIS VIDEO. WHAT DA FUCK IS WRONG WITH KIDS THESE DAYS . WOW I WANT TO RIP MY EYES OUT EVERYTIME I READ SOME FAGGOT COMMENT OF SOME FAGGOT KID TRYING TO TELL THE WORLD HE UNDERSTANDS QUANTUM PHYSICS AT 15 YEARS OLD . HERE'S A TIP LIL FAG : "If you think you understand quantum mechanics, you don't understand quantum mechanics" R.FEYNMAN

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  • @Humaan2012 I'm in my moms fetus and I can comprehend this.

  • @Sipphiron Well I'm still a bunch of quarks working on becoming the particles required to make a fertile sperm and I can understand this completely. :P

  • @TheBlitMaster Hahhahaha, nice.

  • @Humaan2012 calm down bro.

  • @Humaan2012 wasn't that Heisenberg?

  • the other search results on string theory were inbetwen 1-4 minutes long. thats why i chose this.

  • I'm 7 years old. I'm the smartest person in the world.

  • Omg the maths is just so primitive ! :P

  • @xBl00BrothersX you don't have any idea who this "old, grumpy" man is. you know what they are happy for at the end of the day? Physics! bcoz it gives them insight into the universe. And you have no idea how that feels!

  • Pi mesons come in, pi mesons come out, no miscommunication, you can't explain that. Actually, we can :). A bit off topic and crude but i couldn't resist the urge.

  • If the theory is about matter in motion then the formula defines a vector.

    In several vectors we see the wanders that creep into this part of cyberspace but their vectors are pointing toward null space. Thus they will learn nothing from this lecture and thankfully move on. The rest of us will be taking in considerably valuable theory that will give us ideas that are of interest in our studies. This may be dry but Mr Susskind is dropping particle of knowledge valuable to all. TY Stanford.

  • i need a version of this for dummies, i find this stuff real interesting but did'nt go to school enough.

  • @sjewitt22 You should watch the "Elegant Universe" It's a documentary that quite explains the notion of strings in a quite easy and effective way. I found it very interesting, so maybe you will get a better idea as well!

  • Can someone please tell me in which year of physics you get that class ?

  • @noon3freak That's a good question. It depends on how rigorous the approach is. I have only been through only this video and the mathematics and theory seem like something that could be taught to undergrads, but it would have to take place after a quantum physics class at least, and I doubt it would be a mandatory course. It seems more likely to me that it is a graduate course.

  • @noon3freak It's part of his "Continuing Studies" series, i.e., he's designed the lecture style so that it's meant for "older students." I think what this means is usually when you think of a student you think of somebody perhaps in their twenties. These lectures are being presented to people in their thirties and forties, I believe, who may or may not have pursued a career in physics, but nonetheless want a better explanation, a more in-depth view, of modern physics.

  • Well, if you think that you are an amateur in physics and all of a sudden began feeling like a physicist, then you are partially right, in the sense that it is possible only thanks to Leonard's explanation meant for the layman. Try understanding the Wikipedia article and you will go into pieces.

  • Heh, trying to get a headstart... In four years, I hope I'll be sitting in a lecture theater listening to something like this ... And understanding it a little better (because, unlike the lying, egotistical fifteen-year-olds commenting here, this makes no sense to me.)

  • lol @ all the kidos posting comments about how young they are and understand all of this. if you had an exam about what was discussed in this video tomorrow you would prolly get a below 0% grade. keep on dreaming kids. in a couple years you'll wake up on the desk of your shitty desk at your shitty job and wonder : gawsh i was so smart how did i end u here? Ill tell you how , Shut the fuck up, stop thinking you are smart. Pathetic.

  • @DancingMaskProphet Hey, easy! How old are you to say that? I mean what the hell, you must at least be miserable! But that doesn't mean that you have to play it smart. If those "kidos" say they understand everything and even if they don't what good will it do to you or them to say all that rubbish about how life is bad and unfair? Noone will feel sorry for you, really...

  • Is it a bad thing i havent taken high school physics yet and i already understand this?

  • @F35Pilots i just graduated and trust me..high school physics is a joke lol so if you understand this keep up the personal research and youll fly threw high school psychics with flying colors lol

  • lol at 8:57 the youtube subtitles say you could increase their dumbass.. XD

  • Max Planck discovered Einstein by bring attention to his research.

    Albert Einstein discovery L. DeBroglie and S. Bose by bring attention to their research.

    Greatness is using ones greatness to advance science.

    Would Leonard Susskind do the same if he knew of a research solution which was tested to be the success M-Theorist tried to achieve? The answer is most likely no. The peer-reviewed publication is posted and freely available to the world.

  • i want to understand this theory but i have no background of physics.. can some one advice me something more simplier for beginers ???

  • We should be allowed the chance to take tests at Stanford after watching these. I'm curious about what they test.

  • I'm tarded and I understood this.  Susskind is good.

  • CALT-68-2858

    Title The Early History of String Theory and Supersymmetry

    cdsweb.cern.ch/record/1411561

  • this of course is pure religion and has nothing to do with serious science.

    nice fantasies, but all for nothing.......

  • @MAUERBAU1 Not religion at all, religion is certain that it's correct 100% on explaining our origins and existence. This on the other hand, are called THEORIES! theories, meaning it's a proposition till proven right or wrong. Hence string THEORY or M THEORY.

  • @willwork4superpowazz .....lets write again in twenty years......maybe you then understand what i mean

  • @willwork4superpowazz

    First of all, are you a little kid?? You cannot believe everything you hear. Religions has killed many people. Is this 100% correct?

    LOL Theories are the ultimate explanations for phenomena. An example: Newton's Theory of Gravitation.

    This is not a "proposition till proven right or wrong." Theories are not regarded as being true or proven. A better theory can come around.

    Perhaps you can compare a proposition to a hypothesis. This is very basic science, mind you.

  • @mypimpomar I'm actually agnostic, I was stating that religion beliefs itself to be 100% real. As for theories, they are mere suggestions for explaining the origins of whatever. Suggestions as if in yes another better may come along and disprove it, or i will stand true to it's content upon future research. Any who what you said and what were discussing is basic common knowledge, I believe you all just misinterpreted what I wrote.

  • @willwork4superpowazz "As for theories, they are mere suggestions for explaining the origins of whatever."

    No they are not. A scientific theory is a tested, and verified, hypotheses. A scientific theory is backed up by evidence and makes predictions. Calling a scientific theory a "mere suggestion" is shameful.

  • @thisisnotanick You're right, might have sounded a bit degrading, but you must understand and take into account the number of theories that have been replaced in the past, just recently, well not that recent a theory came that if proven right, will turn physics on it's side, having to rewrite all equations and reevaluate countless theories including Einsteins famous E=mc2 along with many others. VSP is what I'm talking about, in this world theories die all the time by new ones.

  • @willwork4superpowazz "but you must understand and take into account the number of theories that have been replaced in the past"

    This is completely irrelevant. What you take into account is the evidence. That "theories have been replaced in the past" isnt an argument for anything at all, it is pure rhetoric. It is certainly not science, by any stretch of the standard.

    Theories dont "die all the time".You dont know what a scientific theory is, even after my explanation.

  • @thisisnotanick Oh man, you need to read more, apparently you've seen a few and are astonished by such. Obviously, a theory to be considered as such has a colossal mountain of evidence research and studies behind it that promote it's validity.

    Don't die all the time? What theories do you know of? String theory, M theory and General relativity theory? Are you aware of the thousands of theories right now, just yesterday a theory in Biology was proven obsolete by a new one.

  • @willwork4superpowazz String theory is a conceptual framework, not a scientific theory. Just because something has "theory" in the name does not mean it is a scientific theory. The same applies to m-theory.

    Obviously it doesnt matter how much you read, since you seem to read a fair amount and yet you still have no idea what you are talking about.

    Give me a few specific examples of scientific theories that have died.

  • @thisisnotanick *Facepalm* Are you slow? Why do people need to ask for info when you have the world wide web at your disposal, just google it and read, do you need me to look info up for you? Or was that demand a crucial point of your retort. READ. Before General relativity there were countless of theories that tried explaining the orbit of Mercury, some were widely accepted though not yet solidified as such. As well as for Natural selection etc. Search contemporary theories.

  • @mypimpomar Newton's laws werent scientific theories, they were "physical laws". The principles in a scientific theory has to explain the phenomena. Not just make predictions.

    On a side note, Newtons laws are very much in use today, for example in every single video game with physics.

  • Very nice! I know now what University i wanna go to:D

  • lol at the ease with which he owns the smart-arse

  • but look he avoids gluons many times btw yeah anoying smartass at 4:36

  • @MckenzieAndy What's wrong with that guy?

  • @Gytax0 34:14 hes got preference i guess ;)

  • Why do they call it a theory, when there is no evidence for it yet. I thought a scientific theory had to be tested and proven.

  • @Typho0n86 Surely if it was proven, it wouldn't be a theory anymore?

  • @GenericLatinUsername You obviously dont know what a theory is. IE theory of evolution, Theory of relativity... For something to become a theory in scientific terms, it has to be supported by evidence

  • @Typho0n86 It's i mathematically supported by evidence. We don't have such strong microscopes to look into the elementary particles.

  • @2:32,

    My what an elegant reason to adopt a mathematical relationship!

  • just watched the big bang theory

  • thought you were going to talk about string theory?

  • based on my opinion this theory is just half coming from einstein and the other half came from plank....as the E=mc square is derived from plank's equation

  • This is all very interesting. Unfortunately as of right now I'm unable to understand exactly why he does what he does.

  • 32:00 come on im 15 and i understood that when he explained it

  • @treefaceman would u like a cookie?

  • What drugs are they taking?

  • @ForeverLivingInTime

    Logicialis ... that thing where you get a boner from thinking very hard.

  • Amazingly, the Regge mass-spin relation holds also for a lot of astrophysical bodies; is there a link between strings and astrophysical structures? Is this fact an observational argument supporting string theory ? See e.g.: Brosche P., Tassie, L.J.: Astronomy and Astrophysics, vol. 219, p. 13, year 1989 and references therein; Wesson, P.S.: Physical Review. D, vol 23, p. 1730, year 1981, Massa, C.: Astrophysics and Space Science, vol. 271, p. 365, year 2000.

  • string theory and partcle physics are both so boring

  • @0warrior4life It's better than the kinematics....now THAT stuff is boring.

  • @suprgrl12

    Cosmology and quantum are the best

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  • SCIENCE RULES!!!!

  • @ajhrockerboy6 Cool story bro. 

  • these m-theory nutheads are a bunch of quackadoodle fuckers. lol. All i see is 3 dimensions of space you dyslexic theoretic quackadoodle shitheads. LOL.

  • @ajhrockerboy6 That's because you have phlogiston for a brain.

  • @metabog uh no. i'm an experimentalist. not a quackadoodle theoretical crackpot like you.

  • i dont think i will understand wht he is telling until i die

  • I'm 16 , is it ok if I can't comprehend this???

  • @twizlers12 Don't worry. I am 39, have a degree in electrical engineering, have studied quantum mechanics for a semester and even I have trouble grasping some of these concepts.

    The math is very complex. Even for those of us that have taken it at the university level.

  • I am 15 years old i have a pritty good understanding of this and i live in cananda can anyone think of a good collage/university to go to for experimental physics like m theory? ,preferably in cananda.

  • @coolaids100 You're 15 so you don't even have to think about that yet. Make sure you get a 4.0 GPA, get a scholarship, join the math team or something like that and all the doors will be open for you.

    With that said, if you're really ambitious you should go for American institutions like MIT or Stanford.

  • wouldnt time travel to the past be to the future.

  • maybe time isnt moving forward but going backward

  • aren't anti quarks just down quarks?

  • @vivlevivle No the down quark along with the up quark (both from the first particle family) makes up protons and neutrons in the nuclei. The anti down quark has almost the same properties as the down quark but opposite sign. The fundamental particles (Standard model) describes three families or three generations of particles with 4 particles in each. That makes up 12 particles. Now they have corresponding so called anti particles that just have opposite sign. There are 12 antiparticles aswell.

  • Man i cant stand watching one person talk for this long. Its why i rarely go to classes, i just do the work

  • @ChadwickMichaelWill there is this thing called a Pause Button...

  • @csmcmillion suure :]

  • farticle!!

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  • THIS is the real physics. Not Michio Kaku's "Physics of the Impossible" or other pop science fictional material.

  • @Gytax0 Should add "real mathematical physics", because after all, physics is the science of experiments.

  • Let's just hope those students realize how incredibly privileged & lucky they are to have Leonard Susskind--not just one of the pioneers of String Theory, but also one of the most gifted Physics expositors/professors of all time--treating them to this exquisitely brilliant retrospective on the subject. It's truly amazing to bear witness to Susskind's natural ability to take a tough/nontrivial subject like String Theory & tenderize it to the point that even a physics infant can easily digest it!

  • @NothingMaster Yeah, but his math is always pretty messy and all over the place. He'll write something down then erase half of it and leave parts out and just say what he means, which gets the point across, but the mathematical structure is just lacking too much for me. When I watch a Walter Lewin lecture, the mathematical structure is so sound that the concepts don't really need as much verbal confirmation as Susskind gives here.

  • @calebp9503 these are not math inclined lectures

  • @NothingMaster who the fuck is leonard susskind??

  • @x1x2x3ct seriously? go away.

  • @PancakesFromHeaven I was joking obviously. Lol

  • @NothingMaster he looks like a creepy, old, boring, lonely, sad, grumpy, man. Good thing I'm not a physics major.

  • @xBl00dBrothersX I'm sure he's the opposite of all of those, well except old.

  • @xBl00dBrothersX I've taken classes with 38 professors. Do you think I don't know what I'm talking about? Most PhDs aren't even very happy with their lives. They are so stressed with teaching, research, conferences, personal life, etc. Most male+old professors look like this man. Some female Profs though are very young and look great! But the older men look like this man... most of the time.

  • Man I can watch this over and over and still be fascinated every time I watch it

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  • @nextblain

    lern 2 spel 1st ?

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  • @nextblain I am partially trolling. I find it quite bizarre asking "how do i get my phd in m theory" while not being bothered to spell "shud". A PhD, even a "plain" BSc implies effort. If you cannot be asked to type 4 words properly how will you put effort to get a physics degree and then go to grad school?

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  • I am a dumb, dumb man.

  • 3957

  • that kid who talks at 4:36 is bugging me

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  • @xXTheDeathReaperXx are you nuts ??

  • @tofusauce Why are you so offended mate? Is it be cause you're the stupid one?

  • If only I was smart enough to understand all that.

  • @redelman43199 Keep plugging away, it'll come together.

  • @redelman43199 Hardly anything to do with being smart. More so memorizing what the words mean. Doesn't take a genius to know that a meson is made of a quark and anti quark, you just read books. If you don't understand these words than yeah it won't make sense.

  • if only Einstein was still alive

  • With Einstein's theory being debunked, isn't this all wrong now?

  • @Graham6762

    hey, u made a shits on mah face, u make an assults on me

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  • I know nothing about physics, I struggled with math, but I can follow what he is saying, and that's because he's a great teacher. 

  • @spacecowboy95 sweet maybe you can explain what a gluon is then?

  • I've never been the biggest fan of these parmesan particles. Not my favourite kind of cheese.

    Wait a minute... this video isn't about cheese!

    Watching this after documentaries where everything's dumbed down with fancy visualisations so that idiots like me can understand what they're talking about makes me think... I'm gonna stick with the strings of my guitar. You go, scientists!

  • I was with him until he started speaking, lol. this stuff is fascinating but way over my head, I need to get back to basic physics and then come back and soak this up! great stuff!

  • Hmmmmn I've never had much time for Susskind, very egotistical individual. Poor lecturing skills too.

    ...and before anyone starts I'm not a creationist. I'm a supporter of the theories, don't get me wrong, just not a big Susskind fan!

  • I don't get this at all :(

  • @DKarlHungus

    You've got to start somewhere.

    Start with a basic foundation and build UP.

  • Now I don't know what to major in. bioengineering or physics?

  • @007MrYang Physics