Brian Cox and Leonard Susskind on String Theory

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  • Опубликовано: 19 дек 2024

Комментарии • 171

  • @NeverMindSophie
    @NeverMindSophie 13 лет назад +4

    I love it when people explain so seemingly complex things in a way that I can understand.

    • @angelawilson1338
      @angelawilson1338 Год назад

      You are blooding joking 😂😂😂 I don’t think I’ve ever heard a bigger pile of bollocks in all my life. But of course I’m only a normal human being. What better way to bamboozle folk than by starting out saying “I don’t expect a lay person to understand this” - that way ego will make you want to say you understand it and it makes sense; because if you were to say “this is nonsense” then all that will prove is that you are too stupid to underatand 🥴 or at least that’s what this con-man would have you believe 😂😂😂

  • @EquinoxParadox91
    @EquinoxParadox91 13 лет назад +7

    Susskind is an absolute monster. Love his lectures.

  • @KnowYourReality
    @KnowYourReality 10 лет назад +7

    2 brilliant, BRILLIANT men. It's great that Stanford U has Susskind lectures, in full on YT, for the general public.
    I would love to listen to this entire discussion if I can come across it.

    • @KnowYourReality
      @KnowYourReality 10 лет назад

      *****
      Gay

    • @americawhereareyou
      @americawhereareyou 10 лет назад

      *****
      :)

    • @KnowYourReality
      @KnowYourReality 10 лет назад

      *****
      All jokes aside you should listen to these 2 guys. They're kick ass.
      If only more people spent their time listening to this sort of stuff and less time watching FOXLies our country wouldn't consist of so many dumb assholes.

  • @cswithjc
    @cswithjc 11 лет назад +4

    Best explanation of String Theory I've seen so far.

  • @geligniteandlilies
    @geligniteandlilies 13 лет назад +1

    Two generations of awesome thinkers. Just beautiful. I love these guys.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    A quark lattice can be made of all neutrons, all protons or a mix, but it figures that quark lattices form most easily with neutrons. With a compressed neutron lattice there is double "down" (-1/3-1/3) compression between "ups" maybe on the way to forming a new quark lattice with +/-2/3 unit charges that include a new "double-down" (-2/3) quark made of subquarks -4/9+2/9-4/9 and a matching up (+2/3) of +4/9-2/9+4/9. Alternatively the +/- 2/3 units could be pairs of +/- 1/3 or quads of +/- 1/6.

  • @audience2
    @audience2 13 лет назад

    @FallofDarkness55 A particle is mathematically modelled as a point. A bubble could have modes of vibration too. Is there a fundamental reason why closed strings are used or is it just an artifact of the model?

  • @ShayGershtein
    @ShayGershtein 13 лет назад +1

    Can anyone please tell me what show is this clip extracted from?
    Thanks

  • @BRAIDERMAN
    @BRAIDERMAN 13 лет назад

    @MouseCheese2010 - Yes, I saw Ed Whitten say that too ! - so I re-ran the video, and just before he says it could be thought of as 'mystery / matrix / magic' - he said 'membrane'. The audio didn't pick it up so well but it is there. I had always thought that the origin of M was for 'Membrane' giving the 2-dimensional string a 3-dimensional surface quality. This, of course, is only a 'physicists shorthand' tool.

  • @TheIceman815
    @TheIceman815 13 лет назад +1

    Love watching smart people talk to each other and try to simplify the subject to the casual science lovers.

    • @PawelSorinsky
      @PawelSorinsky 2 года назад

      That's the difference between Science and scholar communication.

  • @CheatahX
    @CheatahX 13 лет назад +1

    @raydredX It has to do with information from something entering a black hole. You might want to read all about that in "The Black Hole War" by Leonard Susskind.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    Suppose independent dimensions can be equated to independent scales in this instance. Suppose the gravity, weak, coulomb and color scales are, in log10 meters sequence, +21, -4, -15, -17. The scale differences get progressively smaller, 25, 11, 2. Planck scale is -35. The number of scale jumps needed to span the difference between -17 and -35 is going to have to be very large if each jump must be progressively smaller. At some point the jumps might hit a bottom limit and become quite similar.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    Maybe matter actually never makes it past the event horizon of a black hole, but it's all converted into energy instead and the energy quanta are probably tunneled away. Maybe this tunneling occurs along dislocations in the accretion ring caused by frame-dragging. The energy seems to leave the accretion ring at various angles with various properties, mostly as massless quanta, especially at the largest angles, and many of these particles are energetic enough to generate reaction mass.

  • @frun
    @frun 4 года назад +1

    Best explanation of the roots of string theory

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    It seems that in a range of trajectories involving long distances from the BH, but necessarily near the accretion ring spin axis, the BH energy output could create the effect of repulsion, maybe also a vicinity with much antimatter, to the extent that gravity lensing around the BH is distinctly quadrupolar when viewed nearer to the ring plane, and much like a triplet gravitational lens, with two weaker concave elements surrounding a stronger convex element, when viewed along the ring axis.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    If quarks could be broken into 3 parts it seems the charges might be -1/3=-2/9+1/9-2/9, and +2/3=+4/9-2/9+4/9, with three different charge levels -2/9, +1/9, +4/9 instead of two, and the added +4/9 charge level maybe being explainable by the + charging bias inside of an "up" being twice that of the - charge bias inside of a "down."

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    The AdS5xS5 representation I gave earlier is maybe a bit too deep, it embeds the whole representation as a point in real space. Starting with 3D hypersphere times a 3-D saddle-point, as replacement for flat space the simple product of the two 3-D forms is apparently already similar to a 4-D curved space with spherical and quadrupolar aspects. Two scale jumps as point-to-sphere conversions from there might be compared to the jump from universe to ring galaxy to helium (2n2p quadrupole) nucleus.

  • @3LARI
    @3LARI 13 лет назад +1

    Does anyone know what programme this is from please?

  • @raydredX
    @raydredX 13 лет назад

    @nicolara9 I dunno exactly what the relevancy of that would be but, I'm just curious about what exactly was said by Hawking to be proved wrong?

  • @tonybennett4159
    @tonybennett4159 11 лет назад +1

    Brian is a popularizer of difficult science, having made many programmes for the BBC. He asks questions more as an amazed layman would do, in order to make it more clear. He, himself has no need of such explanations.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    I'd like to make the simplest analogy or representation possible for a 5-D Anti-de-Sitter space times a 5-D hypersphere, and I guess the best I can come up with right now is to go with the size-scale-as-dimension concept and see it as a concentric series of five 3-D spheres, with a size-scale separation between spheres such that the next sphere shows as a point in the center when the current sphere has filled the screen, and superimposed in each sphere would be the saddle of a hyperbolic space.

  • @INNATEHUMAN
    @INNATEHUMAN 13 лет назад

    @NorthernEmperor what i understand is 'cause and effect' that both are observable, to me, meaning if we know it (cause and effect) we have already been able to take empiricle action, meaning violation is contractictory..i think.

  • @geoffreyah
    @geoffreyah 14 лет назад

    So these strings have tubes conencted to them like a world sheet and when the tubes connect we have the pull of gravity? This is based on what Hawking said about strings in Universe in a Nutshell. Is that right?

  • @Shigren
    @Shigren 16 лет назад +1

    Brian Cox is 40 years old.... He's a fucking physics professor.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    Multiplying a hyperbolic space by a spherical space, maybe it could mix to make a quadrupolar well when viewed along one plane and yet have spherical symmetry when viewed perpendicular to that plane. I'm not at all sure about all of these things, but all of it still seems possible to me at this point.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    Beyond what I just said, assuming the quark scale is about 10^-2 times as large as the baryonic (with the proton as ideal) scale, and assuming that it is somewhat an ideal ratio, and also that the jump from quark to plank scale is on the order of 10^-18, it's a natural guess to suppose there are about nine scale jumps equivalent to the proton/quark type of relation before hitting the planck scale. Admittedly it's naive, but it says there are about 12 dimensions.

  • @CACBCCCU
    @CACBCCCU 14 лет назад

    Trying to make an 8-dimensional quark lattice, one might take the jump from 10^-15 meters (proton) scale to 10^-35 meters planck scale as having eight equal parts, all around 10^-2.5 [2.5=(15/8-35/8)], putting quarks around 10^-17.5 meters spacing. This is like saying all quarks have three parts with each part having two main types with opposite charges: +/- (1/9, 2/9), and repeating that process down further six more times, next with charges: +/- 1/27, 2/27, etc.

  • @HeVn7LaO
    @HeVn7LaO 2 года назад

    Thank you for posting this…

  • @murozman
    @murozman 14 лет назад +4

    Susskind is just brilliant!

  • @fntime
    @fntime 13 лет назад +1

    @NorthernEmperor Thank you, your input is very clear and appreciated.

  • @guerrilla5002
    @guerrilla5002 3 года назад

    Would be nice to know what documentary this is from.

  • @x1plus1x
    @x1plus1x 14 лет назад

    and what are the strings made of?

  • @automaticSOM
    @automaticSOM 14 лет назад +1

    @repsincan
    I am actually not sure. I know that it was declared that Susskind won the "black hole war" but as to whether he, himself is still a proponent, I dont know.

  • @--Adrian--
    @--Adrian-- 15 лет назад

    what's the name of the documentary??

  • @kadourimdou43
    @kadourimdou43 11 лет назад

    Does anyone one know how to get the rest of this show.

  • @jatoxa
    @jatoxa 12 лет назад

    I think it was a hint that Brian Cox works on the Atlas project at Large Hadron Collider.

  • @automaticSOM
    @automaticSOM 14 лет назад

    @virumoz
    Not to mention the fact that Hawking is now a proponent of string (M) theory; a field that Susskind co founded with a couple of other scientists.

  • @terzifaruk72
    @terzifaruk72 12 лет назад

    What BBC Horizon episode is this?

  • @fntime
    @fntime 13 лет назад

    @NorthernEmperor I know this might sound stupid, but what exactly
    is the 'information' and what is 'conservation of information'?
    Your statement is pretty clear, so I'm really looking forward
    to your explaination.
    Thank you very much!!!

  • @audience2
    @audience2 13 лет назад

    Why closed strings instead of bubbles?

  • @lewisjones4158
    @lewisjones4158 8 лет назад

    What are strings made of?

  • @sidewaysfcs0718
    @sidewaysfcs0718 15 лет назад

    when i hear or see the 2 words
    the first thing i see is like a silk string swirling in the dark with light shining it :D
    wich reminds of string theory.
    i also imagine the standard model chart.

  • @geoffreyah
    @geoffreyah 14 лет назад

    Strings are made out of energy. A vibration is energy like a particle. Waves are vibrations with different fequencies. I love this video because it explains what strings are and how they work very articulately. I like quantum gravity. Hope we can prove it. I like it when a theory predicts something and it become true.

  • @uriituw
    @uriituw 13 лет назад +1

    This is so clearly explained.

  • @Kostly
    @Kostly 14 лет назад

    @adkinsjr Don't they "test" it by smashing atoms in those accelerators and observing how the particles behave on their own?

  • @adkinsjr
    @adkinsjr 15 лет назад

    Exactly, it is often criticized by physicists for this reason. At this point, string theory is just an abstract idea on paper. It's very difficult to find a way to test it. I find it to be pretty fascinating though.

  • @shantibaku7394
    @shantibaku7394 10 лет назад

    Oh to be sat in a vineyard w these guys discussing what the universe is made of!

  • @chrisofnottingham
    @chrisofnottingham 15 лет назад

    As I understand it, the problem with string theory is that while it can be used as a good model to explain what we observe, we are actually forced to choose some of the parameters of string theory based on what has already been observed. Thus it has a bit of circular logic to it.
    Now, as with Newton's Force and Mass, circular reasoning doesn't make an argument wrong. But unlike Newton's equations, it has yet to explain or predict anything in a way that would be different if we didn't have it.

  • @dominiqt24
    @dominiqt24 14 лет назад

    @tokenmatch...uh dude...brian cox is a particle physicist...im pretty sure he knows what susskind is talking about....he asks questions as if its a layman talking to him because the public is giong to see the video

  • @tamenj8308
    @tamenj8308 10 лет назад +9

    I don't think he realises brian cox is a particle physicist

    • @MrMctastics
      @MrMctastics 10 лет назад +2

      string theory isn't exactly traditional. He might know the gist of it, but never have studied further.

    • @timhorton2486
      @timhorton2486 9 лет назад +5

      +Tamen J No, I think that it just makes it more interesting for the interview if he acts like he doesn't know.

    • @Gicopiro
      @Gicopiro 7 лет назад

      He is an experimentalist

  • @keggerous
    @keggerous 15 лет назад

    im in love with susskind at least when he talks physics :)

  • @justinbenglick
    @justinbenglick 12 лет назад

    @sahragraham
    I actually took a course on differential equations where we studied Dirichlet and Neumann Bounday Conditions, and made an A in the course. However, I know nothing about string theory. On the other hand, the LHC has almost completely ruled out the most attractive models of SUSY, so string theory is on the ropes. Not to mention the fact that they can't determine the degrees of freedom in the theory.

  • @claus11212
    @claus11212 15 лет назад

    I wish people like you would be humble to what they have no idea about. If you never studied this, you should not comment on it.

  • @BinaryStars100
    @BinaryStars100 13 лет назад

    @schwarzfalk" Binary precession solutions based on synchronized field couplings" was published by the Indian Journal of Science and Technology and presented at Sofia Tech. University of Bulgaria. The research clearly showed the quantum structure underlining the motion of the most challenging binary stars, DI Herculis included. The American Peer Review process was all about giving String Theory credit in citation and I refused because their research was not needed. The Best Candidate Please

  • @josephfoster1909
    @josephfoster1909 12 лет назад

    The mathematics has been worked out! It just takes years and years if study to understand something so complicated and in depth. The argument against string theory is the difficulty in making experiments that can show the effects because they act on such a small scale. The maths is sound otherwise theorists would have rejected it by now.

  • @ObjectsInMotion
    @ObjectsInMotion 13 лет назад

    @warex3d no se.

  • @Blendletan
    @Blendletan 15 лет назад +1

    Susskind is anything but the coolest physicist out there.
    As far as I can tell, he's about as far from feynman as a fellow can be.

  • @SeekingAllTruth16
    @SeekingAllTruth16 11 лет назад

    What are these?

  • @Messerwon
    @Messerwon 3 года назад

    The gravitational force is created most likely from the electromagnetic nature of all particles. These are the “strings” he speaks of, in my view.

  • @KNEZTRPIMIR
    @KNEZTRPIMIR 16 лет назад +1

    this is not physics its philosophy

  • @sidewaysfcs0718
    @sidewaysfcs0718 12 лет назад +1

    String Theory does make falsifiable predictions , just because you haven't read about them doesn't mean it's unfalsifiable.
    until ST is proven, it needs to be worked on, it might turn out to be false, it might be true, we need to WORK to find out.

  • @galazyangel
    @galazyangel 15 лет назад

    lol brian cox is very easy on the eye...it's a plus that he's so smart. i wonder whats his secret to looking so young?

  • @TCupUK
    @TCupUK 13 лет назад

    This theory has real potential, but I can not help thinking that it is over looking something of fundamental importance.

  • @incubi51
    @incubi51 15 лет назад

    @willieofroanoke ...model uses. Then maybe later i find out that the size doesn't really explain what happens in the pile of sand.
    Not exactly the same as in the case with strings, but close. The model they are working on uses THAT size of strings. Maybe it will work out to explain how the world works. Maybe it wont.

  • @trebuchet1269
    @trebuchet1269 15 лет назад

    There are no particles only waves. Some people just can't accept that everything is made of nothing.

  • @trebuchet1269
    @trebuchet1269 15 лет назад

    no, just someone who has come to terms with the truth of our existence

  • @cakesofdeath
    @cakesofdeath 15 лет назад

    Nope i can't get my head around that i give up. Some things are best left unsolved.

  • @mrswafflechops
    @mrswafflechops 9 лет назад +7

    Brain Cox being made to act like he didn't know any of what the guy was saying xD

  • @FreddyFuFu
    @FreddyFuFu 15 лет назад

    AH! Leonard's flow of conversation and train of thougth is much better when he's oriented by the questions of Brian. Much better than the stanford courses. I learned more in these few 4 min than 4h of Leonard's course on quantum mechanics cause he takes forever to explain vector spaces.

  • @Kalevala87
    @Kalevala87 12 лет назад

    Being unable to directly observe strings is entirely different from being unable to find supporting evidence for String Theory.

  • @dbrinkm1
    @dbrinkm1 11 лет назад

    This is all very interesting and a theoretical Physicist with the mind of a Leonard Suskind can postulate mathematical/Quantum/Mechanical equations that seen to allow certain models to balance......but.....we are talking about a particle that is a billion/billionth the size of an atom ! how can we possible measure such a thing and grasp something akin to a truth that most of us can understand regarding this sub atomic sized entity ?....just a thought.many may have...

  • @psychedelicfungi
    @psychedelicfungi 11 лет назад

    You mean professor of particle physics, Brian Cox who works at CERN?

  • @INNATEHUMAN
    @INNATEHUMAN 13 лет назад

    @audience2 now that statement of yours is is interesting.finally i am writing to a reply that is not pretentious. Actually, i never thought of bubbles. So, if bubbles, im thinking that meansyour considering positive and negitive space, if string, that would mean... positve space =a blank page. negative space= i.e dots for example. a closed of connection still has a connection. i.e light rays, sorry i cant really explain what im thinking but i do not doubt the bubbbles idea

  • @awakeminds
    @awakeminds 15 лет назад

    He can proof it through math. Watch his lectures at Stanford for the math.
    Quantum Entanglements, Part 1

  • @jasonlib1996
    @jasonlib1996 14 лет назад

    who i understand a little of that but by the sounds of that it extreamly complicated stuff

  • @TheLuminousOne
    @TheLuminousOne 13 лет назад +1

    Leonard Susskind would intellectually destroy Coxy. Not bad for a start out plumber.

  • @RaithEndar
    @RaithEndar 12 лет назад +1

    2:25
    HAHAHAHAHAHAHA YUS!

  • @rednecktrucker1969
    @rednecktrucker1969 15 лет назад

    there is tons of data, however, proven data is a different story... that is why it is called a theory. because we are still looking for the answers.
    I guess all religions could be called a theory as well, given that no one jas conclusive evidence for that either.

  • @sidewaysfcs0718
    @sidewaysfcs0718 15 лет назад

    no one said string theory is right ...
    but until we proove it wrong we must follow it and see what results it gets

  • @aliagree8448
    @aliagree8448 3 года назад

    Thinkable

  • @follower8815
    @follower8815 2 года назад

    So what’s a string made of 😂

  • @rednecktrucker1969
    @rednecktrucker1969 15 лет назад

    yeah, if philosophy had data, math, and reason behind it, I would agree! :)

  • @csselement
    @csselement 14 лет назад

    Why does Dr. Cox always wear that helmet around?

  • @G1itcher
    @G1itcher 14 лет назад

    @cakesofdeath Nothing is ever best left unsolved.

  • @franksayer1935
    @franksayer1935 11 лет назад +5

    brian cox is not convinced

  • @jimmyti9cer
    @jimmyti9cer 15 лет назад

    brian cox and amy mainzer should make the smartest best looking child in history

  • @incubi51
    @incubi51 15 лет назад

    @willieofroanoke but some people are interested to hear Susskinds "babble". But I kind of see what you mean, but you take it a bit to far I think. At no point do Susskind say it's proved. He in fact says "It may not even be true."

  • @LegendsXYY
    @LegendsXYY 14 лет назад

    @ermarauder um I think you're failing to read my comment in context to who I replied to because I was being sarcastic...so I can see why you wouldn't know what I'm talking about had you assumed I was being earnest. Plus, my second sentence shows direct disagreement to his comment which would contradict my first sentence if I wasn't being sarcastic.

  • @sidewaysfcs0718
    @sidewaysfcs0718 15 лет назад

    the strings in string theory ....arent actually something u can imagine ..its not just a simple loop ...
    a string is a 1 dimensional object that moves in 11 dimensions and osscilates ...
    a better name would of been "osscilating energy theory" cus thats what strings really are
    but "string" is catchy.

  • @BornAgain89
    @BornAgain89 Год назад

    This is hilarious 😂

  • @carlosjerez23
    @carlosjerez23 15 лет назад

    r u physicist?

  • @mkrenn87
    @mkrenn87 14 лет назад

    @sidewaysfcs0718: As long as string theory gives no chance to falsificate it, it is no scientific theory of anything, And string theory can not predict just one phaenomen of the world. Neighter, describe anything already detected

  • @adkinsjr
    @adkinsjr 15 лет назад

    I don't see why people take such umbrage with string theory. It's just an abstract mathematical model, that few people in the world have any real understanding of. Michio Kaku received a scholarship to Harvard after he built an atom smasher when he was still and high-school. String theory has the attention of the world's most brilliant minds, and it is worth following. However, it is just a MODEL. Some folks just have no concept of scientific modeling.

  • @MumblingMickey
    @MumblingMickey 12 лет назад

    lol... if you think Brian has a bad handle there...go look up the name of the senate leader of the Dutch parliament....

  • @03Kabbotta11
    @03Kabbotta11 15 лет назад +1

    good laugh

  • @Chewy427
    @Chewy427 15 лет назад

    "Sring theory is the wet dream of over the hill professors strung out on too much LSD."
    Can you confirm this? What is your expertise?

  • @afthefragile
    @afthefragile 16 лет назад

    I still don't understand it... :(

  • @sidewaysfcs0718
    @sidewaysfcs0718 12 лет назад

    "perhaps it might not be"
    a sign that Science is NOT like religion.

  • @esquecidonogueto
    @esquecidonogueto 15 лет назад

    Being a physicist I have to disagree with you: first the energy scale at CERN is VERY far from the scale of string theory. Concerning your previous post, I must disagree also. We've seen cosmology growing and, in the past 10 years, our understanding of the Universe was revolutionized. I am talking about dark energy, cosmological constant, neutrinos, magnetic monopoles, ...
    Having said this, I must say that, as you, I too think that the string theory isn't the theory string theorist hope for.

  • @kdc43
    @kdc43 12 лет назад

    Old doc and young doc are back on LSD again.