How we know that Einstein's General Relativity can't be quite right

Поделиться
HTML-код
  • Опубликовано: 12 ноя 2024

Комментарии • 8 тыс.

  • @Big_Tex
    @Big_Tex 5 лет назад +2158

    I love gleaning some nuggets from a 5-minute video. As an interested layman who's read lots of books over the years, that issue of a split electron and how to pinpoint the resulting gravity is a concept I've never seen or thought of, but yeah that is a problem isn't it?

    • @ronaldderooij1774
      @ronaldderooij1774 5 лет назад +106

      Well, there are more problems with it. The most fundamental is that space and time do not seem to be quantized. No matter how hard we look. Even towards the end of the universe, the light is too crisp for a quantized space.

    • @RichardASalisbury1
      @RichardASalisbury1 5 лет назад +85

      Big Tex: I agree. I too had never heard or thought of this problem. But from an epistemological standpoint, even more basic is the problem of singularities (the one preceding the Big Bang being of course the final extrapolation in a whole series of such from current conditions further and further back, to time "zero"). The attempt to eliminate a singularity (infinite heat), resulting from the black-body problem, is what led Planck and Einstein to requantize light (from Maxwell's waves back to Newton's particles), then to work out the consequences of this, thus starting the whole quantum-mechanical revolution. I don't understand why so many of the physicists I've heard about or read, in their popularizations of quantum theory at least, blithely pass over the problem of black-hole singularities. This singularity, in an important way, makes nonsense of General Relativity as currently formulated. My father (Winfield W. Salisbury) in the 1930s believed he had found errors in Einstein's mathematical exposition of GR. Later, Husseyin Yilmaz, a Turkish-American physicist (d. 2012), believed he had corrected such errors, with the result, he claimed, that "black" holes could not exist, only "gray" holes that do leak radiation. (And from my reading, Hawking radiation is something else, and frankly I can't see how Hawking radiation explains how radiation can leak out of black holes so they eventually evaporate, leading, after an unfathomable length of time, to the final disappearance of all matter.) Yilmaz found few fans in the U.S. (Carroll Alley, prof. emeritus at Univ. of Maryland [d. 2016], is the only one I can name), but found some support in Europe, I've heard, notably Italy. If anyone reading this can explain any of these discrepancies in lay terms, or can point me toward such explanations, please comment.

    • @Achrononmaster
      @Achrononmaster 5 лет назад +181

      Sabine is one smart, smart cookie. But you have to remember this is a RUclips vdo. She skips over the fact quanta are never both wave and particle at the same time. So the wave "goes through" both slits, not the particle. The wave function has no classical gravitational effect on itself, it's a function, a representation of incomplete information (q.v. epistemological interpretation of QM), though a quantum wave might have a non-classical self-gravitational effect, I don't think that has been well studied, except perhaps by Penrose. Proof is both theoretical and empirical: we never detect waves, we always detect particles, which only in essembles have the wave interference distributions; and in theory I've never seen any work which is capable of mathematically treating a wave as a particle, never. If the wave function had localised mass, it would not be a wave function, it would be a system of identical particles, not subject to the same superposition rules.

    • @Achrononmaster
      @Achrononmaster 5 лет назад +33

      @@ronaldderooij1774 What do you mean by "too crisp"? And how would that be evidence against quantized spacetime? You need to look damn hard to see spacetime quantization, and arguably this is technical, we haven't got anything near spacetime microscopes. So that's not an argument against quantized spacetime. IMHO I think (suspect) spacetime is not quantizable in the same way quantum fields are, since spacetime is not "particulate". Seems to me much more likely spacetime quantization is related more to local non-trivial spacetime topology, not gravitons. (I think gravitons (as entities distinct from spacetime) are fictional, or to push the particle model they'd be just gravitational waves or solitons. So, for example, I'd like to see more theoreticians reinterpreting bosonic strings as topological features of spacetime.)

    • @Achrononmaster
      @Achrononmaster 5 лет назад +30

      @@RichardASalisbury1 "Grey holes" are now standard, thanks to Bekenstein and Hawking. "Black hole" is an anachronism, which just sounds cool. I doubt Salisbury and Yilmaz were doing anything different to Bekenstein, maybe a different formulation is all --- any thermal radiation is thermodynamics. Singularities are not nonsense, no more so than any infinity arising in mathematics. Since most singularities are censored by horizons, they are in many senses not physical observables. But even if we permit naked singularities, quantum uncertainty will tend to "fuzz out" the singularity, which I think will always dynamically prevent infinite curvature. People end to forget the idealizations in GR --- it is too often treated as a picture of reality, when in practice is typically deals only with highly idealised matter distributions which never occur in the real world.

  • @markradcliff2655
    @markradcliff2655 4 года назад +5799

    You have to give Albert credit. He had no atom smashers. No LIGO. Just a pencil, a paper and his imagination. In 1905 he forever changed the world.

    • @nik8099
      @nik8099 4 года назад +79

      Not necessarily for the better...

    • @Milan-db3uy
      @Milan-db3uy 4 года назад +844

      @@nik8099 Not necessarily for the bad either. It's how you want to look at it.

    • @markradcliff2655
      @markradcliff2655 4 года назад +469

      @Thomas Shelby Figuring out the perehilion orbit of Mercury with your own theory and being right isn't to easy. It is also unrelated to his achievements in quantum mechanics. I'll send you a telescope but you have to promise you to decipher the true nature of black holes. Talent will let you hit a target no one else can hit. Genius will let you hit a target no one else can see.

    • @markradcliff2655
      @markradcliff2655 4 года назад +45

      @Thomas Shelby . I agree with you. Liebniz was right on it. If you look up Emily Du Chatelet you will see she pointed this out. Newton wasn't observing inverse square laws. Du Chatelet pointed this out about gravitational attraction by dropping a lead ball into clay at two different elevations. I agree with you and wish you well.

    • @praphael
      @praphael 4 года назад +350

      Einstein didn't operate in a vacuum. He was proceeded by Henrick Lorentz, who had worked out the mathematics of transform or inertial reference frames assuming that c was invariant to both observers. This was shown experimentally, particulalrly Michelson and Morley in their famous interferometersetup. The invariance of the speed of light was also a theoretically result of Maxwell's equations which implied that a propogating transvese EM wave would travel at a constant speed. Einstein's genius was to synthesize all these results into a coherent theory.

  • @desiderata8811
    @desiderata8811 5 лет назад +2724

    I love the way she pronounces “ Einstein “, the German way !

    • @Novasky2007
      @Novasky2007 5 лет назад +128

      Oin Shhtoin

    • @stopusingthisavatar56
      @stopusingthisavatar56 5 лет назад +48

      Me too, though to my english ears it /almost/ sounds mocking.

    • @kekuleonitro
      @kekuleonitro 5 лет назад +25

      Indeed! That was the best part of the full video!

    • @Tore_Lund
      @Tore_Lund 5 лет назад +25

      I think she is Swiss?

    • @madmanX1314
      @madmanX1314 5 лет назад +114

      She has a german accent in general.

  • @zabintasrik4488
    @zabintasrik4488 3 года назад +485

    If two theories are having a hard time getting along, it doesn't mean that they're completely wrong, but that they're incomplete and needs to be replaced with a much more complete theory, which will still be incomplete in some cases and then the cycle goes on as science progresses. I think the theory of relativity was such an advancement in science which was necessary for progress

    • @bobbarclay3203
      @bobbarclay3203 2 года назад +61

      You are precisely right. Einstein said almost exactly back in papers meant for lay persons who are unfamiliar with the math.

    • @zabintasrik4488
      @zabintasrik4488 2 года назад +8

      @@bobbarclay3203 thank you good sir

    • @Harlem55
      @Harlem55 2 года назад +16

      No, not quite. If we look at SR/GR - at first glance they contradict each other and both eventually break given a small enough scale of things. (SR supports the idea that earth is flat and GR inherently requires the earth be round). Paradoxically, we find that the earth is both flat and round. The earth is flat on the smaller scale of things as is evidenced by our every =day observations - that is until you get far enough away from it to realize that because of scale, the "flatness" is really "roundness". Rather, the same way - quantum mechanics requires a finitely small enough scale before the theory can work, where GR/SR requires a finitely large enough scale to work. Therefore, there is most likely an extension of theory that appears to refute both GR and SR on its face, but will only occupy a scale of things that preciesly fits between GR/SR and quantum mechanics as to form a joint between the two in the same way that there is a joint between GR/SR. If GR/SR explains how things the size of planets behave, and quantum mechanics explain how things the size of electrons behave, the question becomes what about a scale of things which is of a size that fits a territory that is too small for GR/SR but too large for SR/GR? I think the trick will be to first identify the precise point that GR/SR breaks down and likewise the precise point that quantum mechanics breaks down as to then define the space in which a third theory must then operate. Rather, it is wise to first determine the size of the hand before attempting to find a latex glove that will properly fit it.

    • @hosh1313
      @hosh1313 2 года назад +9

      The 2nd postulate is absurd.
      When quantum physics says 1 electron going through a slit is the same as 2, then it is equally absurd - that simply doesn't happen.
      Both parties are mathematically deluded!

    • @bobbarclay3203
      @bobbarclay3203 2 года назад +34

      @@hosh1313 Physics does not say a single electron moves through both slits. What goes through the holes cannot be seen as physical objects, but as the mathematical representation of the electron. The representation is called the wave function. The wave function is a a set of forces that cannot be seen as physical things, but only envisioned as pure mathematics. The effect does happen, the only explanation in traditional physics is that the electron goes through both holes. The explanation in Quantum physics is that the wave function goes through both slits. I prefer to think that what goes through the slits is the electromagnetic effect of the electron on the screen, which displays one result when a detector is added, and another when no detector is present.This is also not true, but works somewhat as an analogy, as long as you dont take it too far.

  • @monicagomes3023
    @monicagomes3023 Год назад +97

    Has someone that has not studied more than high school physics, i find your explanations very easy to understand. I love to see this kind of content, and hope someday will reach an unified theory that works.

    • @maalikserebryakov
      @maalikserebryakov Год назад +1

      Ok so summarise why general relativity can’t be true in less than 40 words.

    • @guydreamr
      @guydreamr Год назад +4

      @@maalikserebryakov Because I said so.

    • @vtnatureboy
      @vtnatureboy Год назад

      I believe a unified field theory that works exists. It is commonly referred to as consciousness. The theoretical physics community is not ready for that yet. Thus, it is easier to say “we are still looking.” It is identical to someone who says “I’ll never find the love of my life,” then when their consciousness (or self-consciousness) changes, voila, the love of their life appears.

    • @JulianDinkins
      @JulianDinkins 5 месяцев назад +1

      Because they understand the subject they are talking about so well, very smart people like her can explain something complex to not so smart(me) and very smart(definitely not me) people using basic words.

    • @piyushsingh178
      @piyushsingh178 3 месяца назад

      @@maalikserebryakov Well, general relativity doesn't sit well with quantum mechanics. This is because in quantum mechanics, an electron goes through both slits simultaneously in the double slit problem. However since electrons have mass and mass will bend spacetime and produce gravitational pull as per the general relativity, the problem arises which place will the gravitational pull go? This is not a fully solved problem even now but it does prove that the general relativity is incomplete. In addition, general theory of relativity breaks down at singularity, places where general relativity predicts infinite energy density for example at the center of our galaxy (a black hole) and at the time of big bang. The 3rd problem has to do with Hawking radiation emitting out of black holes: once the black hole is gone and radiation is all you have left you can never know what was in the black hole. This loss of information is incompatible with quantum theory.
      Basically all these are examples of various theories being incompatible with each other in specific situations, thus requiring a more "general" general theory of relativity.

  • @Jesus.the.Christ
    @Jesus.the.Christ 5 лет назад +220

    Quantum mechanics does NOT tell us that an electron goes through two slits at once. We have interpretations in which "going through two slits" is part of the explanation, but we DO NOT know what the electron is doing.
    Also, that our mathematics cannot handle singularities does not imply that General Relativity is wrong and therefore Quantum Mechanics is the answer. It simply means that General Relativity is incomplete or needs to be replaced. Inserting Quantum mechanics into that process is like saying that because cars run out of petrol we can only travel by airplane.
    And finally, attempting to apply informational theories to spacetime is ridiculous. There is zero evidence that spacetime is quantified. Assuming it has to be is willingly wearing a blindfold.
    Just as we know Relativity is incomplete, we also know that Quantum Mechanics is incomplete. Perhaps we should be utilizing our intelligence and imagination to explore the holes in our theories before we exclaim that one group of theories needs to be subjugated to another group of theories.

    • @nohaylamujer
      @nohaylamujer 5 лет назад +11

      Well said

    • @Steve-go8yr
      @Steve-go8yr 5 лет назад +7

      Check mate

    • @BatEatsMoth
      @BatEatsMoth 5 лет назад

      So do you favor pilot wave theory?

    • @Jesus.the.Christ
      @Jesus.the.Christ 5 лет назад +16

      @@BatEatsMoth No. I like it as it renders complex ideas into something that we can easily wrap our brains around, but like all interpretations of Quantum Mechanics we cannot prove it is the "correct" interpretation. That said, there are other interpretations I like simply because they are extremely weird.
      EDIT: Here's a great 60 Symbols vid of Sean Carroll talking about QM interpretations: ruclips.net/video/ZacggH9wB7Y/видео.html

    • @pennrogers4963
      @pennrogers4963 5 лет назад +9

      I’ve found that a lot of physicists do not actually understand the Copenhagen interpretation. most, of course, do not need to. it’s when they pretend that they do that irks me.

  • @dominicstewart-guido7598
    @dominicstewart-guido7598 4 года назад +1392

    A more accurate title would be "Why general relativity is an incomplete theory"

    • @obsoleteboomermobileobsole2043
      @obsoleteboomermobileobsole2043 4 года назад +248

      As a great statistician once said "All models are wrong. But some are useful."

    • @dominicstewart-guido7598
      @dominicstewart-guido7598 4 года назад +43

      @@obsoleteboomermobileobsole2043 Seems somewhat accurate for all fields of apllied mathematics.

    • @user-hr8pz6lh5w
      @user-hr8pz6lh5w 4 года назад +7

      Glad you were on top of it. Thanks

    • @pferrel
      @pferrel 4 года назад +182

      I think you mean "Why GR and Quantum Mechanics are incomplete". Why does everyone pick on GR when Quantum theory is equally unable to describe gravity at small scales.

    • @dominicstewart-guido7598
      @dominicstewart-guido7598 4 года назад +18

      @@pferrel Good point. We will only have a complete model when all physical models are consolidated into one universal model.

  • @huntrz
    @huntrz Год назад +25

    You have put a lot of effort in making this video. It is highly informative and enlightening for people like me who have not studied physics in depth. Please accept my sincere gratitude.

  • @haydendenham4355
    @haydendenham4355 2 года назад +175

    I’ve know of the necessity of finding quantum gravity for a while now, but this video has brought the addition of the double slit issue to my attention. Thank you for creating such an informative and wonderful video!

    • @positivelycurvedpikachu
      @positivelycurvedpikachu 2 года назад +3

      I didn't understand why the double slit is an issue for General relativity. Please, can you explain it?

    • @EBSammy0
      @EBSammy0 Год назад +5

      @@positivelycurvedpikachu I think in this case (as I interpret it from the video), the problem comes from the fact that general relativity doesn't address how an electron going through a double slit interacts with/creates a gravitational field, since in theory the electron is in two different places simultaneously during that process. Because general relativity doesn't address quantum particles, we can't use it to make an assertion about where the electron generates its gravitational field when it is in such a quantum state (whereas a more complete, universal theory should always be able to find the answer in every case).

    • @RegisTerSlow
      @RegisTerSlow Год назад

      @@positivelycurvedpikachu First off the double split is insanity. Light being able to be a wave, which isn’t a thing btw, and a particle at the same time is dumb. We need to bring back the aether for sure before this gets anymore out of control. 2 things cannot be possible based on outside observations according to relativity. This is the only thing I agree with Einstein about. Quantum is dumb and not possible. Yet relativity is just a bandaid to keep your model afloat as well as many many other excuses based solely on philosophy of the Copernican principle. He is wrong, yet all science since then has decided to ignore any and all experimental results that are contradictory to Heliocentrism

    • @RegisTerSlow
      @RegisTerSlow Год назад

      @@positivelycurvedpikachu If everyone here actually went back to the history of science after Copernicus and note what happened in regard to experiemental results and the blatant plugging of holes in your model, you would see that it’s all total bs. If you all understood relativity, moreso special relativity, you would understand it’s a purposely complicated theory proposed only to explain away results that kill your model. There has been a lot of this throughout the years even before Copernicus, where things were proposed or changed so that the model would live on. Anyone interested in this let me know and I’ll post a handful of times this has happened. Heliocentrism is not reality, at the very least we’re geocentric and it’s provable if you dismiss the nonsensical excuses that, were again, chosen based SOLELY on philosophical grounds and preference rather than actual scientific reasoning.

    • @positivelycurvedpikachu
      @positivelycurvedpikachu Год назад +1

      @@RegisTerSlow yes! please share

  • @Stan_144
    @Stan_144 5 лет назад +21

    I found your channel just a few days ago. It is obvious you have extraordinary mind and a talent for expresing with a great clarity and precision.

    • @MFM230
      @MFM230 5 лет назад +4

      Well said!

  • @sundog486
    @sundog486 Год назад +5

    Watched for a second time, 4 years later. Those infinities keep revisiting me! Fascinating as ever, thank you Sabine.

  • @Belgium_citizen
    @Belgium_citizen Год назад +82

    As a nuclear physicist, i appreciate very much how you translate the formulas into a narrative that elucidates the non technical audience, but remains remarkably intact in accuracy of meaning. I highly recommend for everyone interested in the wonders of this amazing level of reality that we are bound to. Thank you Sabine.

    • @pariah_carey
      @pariah_carey Год назад +1

      As an Aspiring Physics Enthusiast with an Autodidactic Desire to fill the Glaring Gaps in my Education, this Channel has been invaluable in rectifying my Science Illiteracy. She does a Great Job of making it easier for an Amateur like myself to understand Concepts that are beyond my Meager Grasp of the Subject.

    • @donaldkasper8346
      @donaldkasper8346 Год назад

      Impressive. No lensing around planets of the solar system. No lensing around stars behind our sun every day. No lensing of the trillions of stars in the universe. Just galaxy lensing. That is called dust and water diffraction. Of 20 lens objects out of a trillion trillion trillion trillion trillion is impressive to you, keep in mind that statistically your model defines nothing but noise.

    • @SuperSedingAngeL-yr0
      @SuperSedingAngeL-yr0 Год назад +2

      As a high-school drop out-
      e•lu•ci•date
      Verb
      - to make clear; explain.
      "-Sabine's ability to elucidate any subject matter is uncanny."

    • @steviesevieria1868
      @steviesevieria1868 Год назад +1

      @@pariah_carey One of the gaps in your education is learning not to use capitalization improperly.

    • @pariah_carey
      @pariah_carey Год назад

      @@steviesevieria1868 I was actually an English Major. So, I am WELL aware of the Technical Incorrectness of my Personal Capitalization Habits, but I assure you that it is VERY much intentional.
      I apologize if you experienced Discomfort at the Unfamiliar Sight of my Avant-garde Style.
      But alas, that is the Nature of pushing the Boundaries of Acceptable Syntax and Grammar. 🤷‍♂️

  • @mael-strom9707
    @mael-strom9707 5 лет назад +607

    I always had a suspicion there was something not quite right with my relatives. ^^

    • @wifeoutgaming202
      @wifeoutgaming202 5 лет назад +16

      I love this comment. Hahhaa

    • @freddan6fly
      @freddan6fly 5 лет назад +33

      @Science Revolution Simply put you know nothing.

    • @mog53j19
      @mog53j19 5 лет назад +8

      I have the feeling that you have kind of misunderstanding of the theory of relativity, I cann' t belam you, I think nobody understands it .

    • @freddan6fly
      @freddan6fly 5 лет назад +18

      @Science Revolution You believe a theory you have found on a flat earth or conspiracy theory site. Thie electric world has been disproven over and over and over and over and over and over again. You believe a theory without proof or math. Just 100% stupid mixed with worlds you don't understand and some misunderstanding of Tesla's most idiotic ideas.

    • @patrickbrumm420
      @patrickbrumm420 5 лет назад +13

      @Science Revolution Now you are spamming

  • @Thomas-gk42
    @Thomas-gk42 Год назад +11

    😊wow, clear structured information. A pleasure to see and hear Sabine

  • @bloodyxombie
    @bloodyxombie 4 года назад +240

    But how do we know that the problem here is with general relativity and not quantum mechanics, since the latter has more problems and dubious things in it than general relativity?

    • @louiekidd251
      @louiekidd251 4 года назад +20

      When you get it all figured out, let me know.

    • @hasanalmonem5713
      @hasanalmonem5713 4 года назад +33

      cuz quantum mechanics has experimental proof

    • @psychohist
      @psychohist 4 года назад +85

      @@hasanalmonem5713 Actually relativity theory arguably has better proof than quantum mechanics do.

    • @hasanalmonem5713
      @hasanalmonem5713 4 года назад +1

      @@psychohist yes, in general it does..but not in this issue I think..i am no expert..just a casual reader..so I may be wrong

    • @BladeOfLight16
      @BladeOfLight16 4 года назад +45

      @@hasanalmonem5713 General relativity has GPS to prove it. You literally depend on the theory every time your phone depends on your location. Quantum has its own widespread pratical applications as well, such as computer circuitry that depends on it. But quantum is weird as heck and has very little that's observable visually. My _intuition_ is to doubt the completeness of our quantum interpretations and models first because frankly they make no freakin' sense.

  • @johnmooney9444
    @johnmooney9444 Год назад +3

    You share your knowledge quite effectively, emphasis on the word 'share', which makes you an excellent instructor. Thanks and Cheers

  • @kipling1957
    @kipling1957 5 лет назад +402

    Once I figured out that “meta” was actually “matter,” it started to make sense.

    • @TheGodlessGuitarist
      @TheGodlessGuitarist 5 лет назад +8

      lol yeah that spazzed me for a minute too

    • @Jianju69
      @Jianju69 5 лет назад +10

      Subtitles saved me on that one.

    • @neohumanist8181
      @neohumanist8181 5 лет назад +12

      Oh, yeah, you mean instead of MADDER?

    • @kurington.blogspot7876
      @kurington.blogspot7876 5 лет назад +4

      Is this some sort of English joke I'm too cosmopolitan to understand?

    • @kipling1957
      @kipling1957 5 лет назад +2

      Kurington Kuriton No, just vowel shifts in language.

  • @Subutai2024
    @Subutai2024 2 года назад +23

    Great video.
    I think that what General relativity did to Newtonian physics another theory (maybe quantum gravity?) may do the same thing to Einstein’s theory. It doesn’t mean that is something wrong with it. It’s been invaluable in the progress of physics. Same thing with Quantum mechanics. As we learn more and more of particles and the universe, we can come up with better theories or improvements to the existing ones that will cover some of the gaps on the existing ones. That’s what science is about. Making progress, destroying paradigms, expanding our understanding and knowledge. Great respect for the scientist who with open mind work to get us closer to this goal. One of my children is a biochemist and works in a research area of a University in Michigan. One of my nephews is a doctor in mathematics and is also working in a research university in Germany. Very glad that my family is part of that process.

    • @0x0michael
      @0x0michael 2 года назад +1

      you get it

    • @barneyronnie
      @barneyronnie Год назад +1

      Cool. I received my PhD in Mathematics in '92. Semi - retired now.
      Reinhold Von Treffencaunbowz, PhD

  • @dThapa966
    @dThapa966 3 года назад +83

    Looks like RUclips algorithm thinks I'm an intellectual and suggested this. Great honor and good to be here 👍
    ps: I did NOT understand this video at all 🤫😂

    • @unintentionallydramatic
      @unintentionallydramatic 3 года назад +2

      PBS Space Time & Isaac Arthur.
      You'll love it.

    • @frankdimeglio8216
      @frankdimeglio8216 3 года назад

      @@unintentionallydramatic WHY ELECTROMAGNETISM/ENERGY IS UNIFIED AND BALANCED WITH/AS WHAT IS GRAVITY:
      Gravity AND ELECTROMAGNETISM/ENERGY are LINKED AND BALANCED opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Therefore, Einstein's equations and Maxwell's equations are unified (given the addition of a fourth spatial dimension); AS E=mc2 is DIRECTLY and fundamentally derived from F=ma; AS TIME DILATION proves that electromagnetism/ENERGY IS GRAVITY. ACCORDINGLY, Einstein's equations predict that SPACE is expanding OR contracting in and with TIME; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!! (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.)
      Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, the rotation of the Moon MATCHES it's revolution. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/ENERGY IS GRAVITY.
      Gravity IS ELECTROMAGNETISM/ENERGY. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. THE SUN purely exemplifies time DILATION. INSTANTANEITY is FUNDAMENTAL. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!!
      The stars AND PLANETS are POINTS in the night sky. Let's compare this directly with BOTH a falling object AND the speed of light (c). Great. E=mc2 IS F=ma. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. INSTANTANEITY is FUNDAMENTAL to the FULL and proper understanding of physics/physical experience. Ultimately and truly, TIME is possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. The ultimate unification of physics/physical experience combines, BALANCES, AND includes opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT. It ALL makes perfect sense. THINK !!!
      The Earth that undergoes time DILATION IS thus represented (ON BALANCE) as what is A POINT in the night sky, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. (So, notice that the BLUE SKY IS no longer visible. Think.) E=mc2 IS F=ma. It is FULLY proven. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Alas, the INTEGRATED EXTENSIVENESS of THOUGHT (AND description) is improved in the truly superior mind. I have truly, CLEARLY, AND MATHEMATICALLY unified physics/physical experience. OVERLAY what is THE EYE in BALANCED RELATION to/WITH what is THE EARTH. (Notice the black space of THE EYE, AND the DOME of a person's eye is ALSO visible.) THE EARTH is ALSO blue. Again, E=mc2 IS F=ma. The stars AND PLANETS are POINTS in the night sky. Time dilation proves that E=mc2 is DIRECTLY and fundamentally derived from F=ma, AS electromagnetism/ENERGY IS GRAVITY. It ALL makes perfect sense. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. BALANCE AND completeness go hand in hand.
      By Frank DiMeglio

    • @unintentionallydramatic
      @unintentionallydramatic 3 года назад +4

      @@frankdimeglio8216
      Take your meds.

    • @Gandhi_Physique
      @Gandhi_Physique 3 года назад

      @@frankdimeglio8216 We don't live in an electric universe. It's been debunked countless times. You sound like a lunatic typing like that. Learn some internet decency.

    • @frankdimeglio8216
      @frankdimeglio8216 3 года назад +1

      @@Gandhi_Physique TIME DILATION IS FULLY EXPLAINED, AS THE ULTIMATE MATHEMATICAL UNIFICATION OF PHYSICS/PHYSICAL EXPERIENCE IS CLEARLY PROVEN:
      A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY; AS E=MC2 IS F=MA. Gravity IS ELECTROMAGNETISM/energy. (The stars AND PLANETS are POINTS in the night sky.) Time DILATION ULTIMATELY proves ON BALANCE that electromagnetism/ENERGY IS GRAVITY, as C4 is a POINT that is ELECTROMAGNETIC/GRAVITATIONAL (ON BALANCE) as SPACE; AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. E=mc2 IS F=ma. A planet AND a star thus constitute what is A POINT in the night sky. It ALL CLEARLY makes perfect sense. Gravity IS ELECTROMAGNETISM/ENERGY. ACCORDINGLY, I have ALSO fully explained the MATHEMATICAL UNIFICATION of Einstein's equations and Maxwell's equations (GIVEN THE ADDITION OF A FOURTH SPATIAL DIMENSION); AS E=mc2 IS F=ma. The Sun AND the Earth are F=ma AND E=mc2. Great. SO, ultimately and truly, TIME is NECESSARILY possible/potential AND actual IN BALANCE; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. AGAIN, time DILATION ULTIMATELY proves ON BALANCE that E=MC2 is F=ma; AS ELECTROMAGNETISM/energy is gravity. Great. Indeed, this NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. (E=mc2 IS F=ma.) Therefore, INSTANTANEITY is thus FUNDAMENTAL to what is the FULL and proper UNDERSTANDING of physics/physical experience; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. SO, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Accordingly, the rotation of WHAT IS THE MOON matches it's revolution. MOREOVER, a given PLANET (including WHAT IS THE EARTH) sweeps out equal areas in equal times consistent WITH/AS E=MC2, F=MA, AND what is perpetual motion; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites, AS E=MC2 IS F=MA; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!! It ALL CLEARLY makes perfect sense. BALANCE and completeness go hand in hand. Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black. E=mc2 IS F=ma. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent with/as what is BALANCED ELECTROMAGNETIC/gravitational force/ENERGY, AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. (Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE.) E=MC2 IS F=ma. Objects fall at the SAME RATE (neglecting air resistance, of course), AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/energy. E=MC2 IS F=ma. It ALL CLEARLY makes perfect sense. Magnificent !!!
      By Frank DiMeglio

  • @FormsInSpace
    @FormsInSpace Год назад +3

    just read this fascinating take on the issue "The barrier between these two theories is when we start to approach the present moment in time. The past is observable and measurable therefore predictable, and the future is unobservable and can only be probabilistic. When we look out into the universe we are looking into the past. That is why GR works so well. But when we are looking at particles it becomes unpredictable because we are making observations too close to the present moment and too close to the unobservable future."

  • @samwilson9568
    @samwilson9568 2 года назад +48

    Love your videos! So well explained and understandable!

  • @Mote78
    @Mote78 5 лет назад +57

    Einstein may not have won the game but he took us far ahead in the game. It will take another super genius and creative mind like his to solve singularity.

    • @AL-SH
      @AL-SH 5 лет назад +40

      @Donald Kasper Lol, a random nobody on RUclips calling one of the brightest mind in physics and cosmology an idiot, while his GR has been confirmed in the macro state, over and over. You and your electric universe cult are the idiots who have provided NOTHING to science.

    • @Mote78
      @Mote78 5 лет назад +9

      Donald Kasper
      A know-it-all that knows nothing.

    • @indrajithak47
      @indrajithak47 5 лет назад +11

      @Donald Kasper you couldn't come up with the idea of general relativity had you existed in his day and time. Go back to your chores peasant, your contributions in life for now and in the future are of insignificance.

    • @trollobite1629
      @trollobite1629 5 лет назад +8

      @Donald Kasper And you're an idiot that doesn't realise that RUclips exposes charlatans, the gullible and the slow minded for what they are.

    • @yyk71200
      @yyk71200 5 лет назад +4

      scitechdaily.com/astronomers-observe-the-birth-of-a-massive-star-in-the-milky-way/

  • @hopydaddy
    @hopydaddy 2 года назад +33

    I love your channel. You do real science and talk about things most others rarely talk about - like this topic. This is the first time I've heard from anyone that the General Relatively may not be entirely accurate.

    • @joaquinmatacastillo7554
      @joaquinmatacastillo7554 2 года назад +13

      Because it is, this video is just showing in which cases GR is not compatible with QM. We can change the title to "Why Quantum Mechanics can't be quite right" and the results will be the same.

    • @planomathandscience
      @planomathandscience 2 года назад

      Is this your first video? lol

    • @LoveOverwhelming
      @LoveOverwhelming Год назад

      @@joaquinmatacastillo7554 Both are not quite right, because both have problems with singularities; this is not merely about incompatibility, but about a fundamental flaw.

    • @joaquinmatacastillo7554
      @joaquinmatacastillo7554 Год назад

      @@LoveOverwhelming yeah, both have flaws, but she's telling people that GR is the flawed one just because it is incompatible with QM. That's the problem.

    • @LoveOverwhelming
      @LoveOverwhelming Год назад

      @@joaquinmatacastillo7554 no, that's the exact point. Both of them fail when merged, meaning both have problems.

  • @heffsf
    @heffsf 2 года назад +27

    Brilliant! Thank you for your cogent and concise explanation of such a difficult and, sometimes misunderstood, topic.

  • @davidanderson4136
    @davidanderson4136 2 года назад +41

    Very much love your lectures...
    Thank you for all you reveal and breakdown for the layman who can't do the math...

  • @VideoFunForAll
    @VideoFunForAll 3 года назад +20

    Here lectures are generally great! Few people are able to express complex concepts in such a clear way as she does!
    But in this case, I disagree with a lot that is stated.
    Simply postulating that Quantum Theory is right and General Relativity is wrong so, therefore, Quantum Theory needs to be extended by Quantum Gravity and General Relativity discarded with is not a very scientific approach. Until we have a theory that works for both we will see how much of GR versus QT was correct or perhaps they were both wrong and are replaced by something else.
    Also, the claim that in a double-slit experiment an unmeasured photon goes through both slits is not substantiated by evidence. The reality is that we do not know what happens, let alone how the wave function relates to gravity! There is no experiment that shows a photon actually goes through both slits. Yes, the calculation requires the wave function to consider both slits but the wavefunction is not necessarily an expression of what physically happens.
    Also, the expression that a singularity is a problem and an indication a theory is incorrect or at least incomplete is going a bit too far.

    • @mattk1358
      @mattk1358 2 года назад +1

      Agreed, since the quantum function results in a complex number that seems to be the mystery, on what the heck that means. Probability is a hack.

    • @doughvictor2893
      @doughvictor2893 2 года назад +1

      My understanding of the double slit experiment is that the photon acts as both a particle or a wave and is altered by the act of observation

    • @bngr_bngr
      @bngr_bngr 2 года назад

      The double slit experiment has been proven by various methods.

    • @VideoFunForAll
      @VideoFunForAll 2 года назад +1

      @@bngr_bngr Nobody is questioning the outcomes of the double slit experiment. The issue is the statement: "an unmeasured photon goes through both slits"

    • @honzo1078
      @honzo1078 2 года назад

      @@mattk1358 Exactly!

  • @simonthomas296
    @simonthomas296 3 года назад +21

    She said at the end, this has been known since the 1930s. It has taken almost 100 years for some one to finally explain it this well. Bravo and thank you for this fine explanation

  • @ncascadehiker
    @ncascadehiker Год назад +2

    Modern physics classes only have about 10 students at a university of 45,000. But a RUclips video on physics attracts millions of experts.

  • @kevinm4157
    @kevinm4157 4 года назад +94

    *"Quantum mechanics tells us that the particle goes through both slits at the same time."* < It does? Said who? Niels Bohr? The Copenhagen interpretation is but one solution out of many. David Deutsch would disagree, and he's hardly a dummy.

    • @johnunvaxxed1918
      @johnunvaxxed1918 4 года назад +12

      someone paid attention, thanks

    • @lemondemerveilleuxdechrist6515
      @lemondemerveilleuxdechrist6515 4 года назад +3

      I agree with you

    • @kevinm4157
      @kevinm4157 4 года назад +14

      @@hmJgyinPlM The relational _interpretation_ is just that, an interpretation. Quantum mechanics doesn't *say* what's happening, it presents a riddle, open to interpretation. Personally, I don't favor the MWI promoted by Deutsch, *Hawking,* and many others, however I cannot rule it out. It would be just as flawed to claim that quantum mechanics tells us that the MWI is true. I lean much further towards the interpretation she's promoting myself, by the way.

    • @gilian2587
      @gilian2587 4 года назад +9

      "Quantum mechanics tells us that the particle goes through both slits at the same time." -- What particle? Electromagnetic radiation is a wave that sometimes gets approximated as a particle from time to time.

    • @fraserembrey5676
      @fraserembrey5676 4 года назад +8

      @@gilian2587 its not particularly relevant whether particles ‘really’ exist or not. Like phonons, they are a useful way to describe the mechanics. Quantum fields are not compatible with general relativity because the matter, which is needed to describe the spacetime curvature, has no defined location and so there is no way to properly describe the curvature in a quantum scale. Quantum theories are also non-local which is another conflict with GR.

  • @GregoryTheGr8ster
    @GregoryTheGr8ster 5 лет назад +10

    The background image is WILD and MIND-BENDING!

  • @TheRudraCool
    @TheRudraCool 5 лет назад +17

    Ma'am you are so smart. Thank you for this amazing video.

  • @edwardfortae2350
    @edwardfortae2350 2 года назад +53

    I've been trying to read a lot about these sorts of things and it's very interesting to hear you explain it so simply. With the new discovery of creating mass, as in new quarks, from and electronic field it makes me wonder if the other dimensions we can't see that are extremely small are altered much more by mass in our 4 dimensions we see every day.

    • @chriskelly3091
      @chriskelly3091 Год назад +1

      Yes it does seem as if physics is explained in terms of 3D only.

    • @gnarthdarkanen7464
      @gnarthdarkanen7464 Год назад +1

      I've been suspecting for years, now, that "Pure Time" as dimensions, is also a 3D entity, just like our view of "Space" is 3D... That would give us 6 full dimensions between the two. The trouble (as I see it so far) is that while we can experience the results of traveling through Time in any direction, the exact assignment of and X,Y,Z-concept to Time is much more difficult to calculate or quantify, even if they do exist.
      We can only get older, as we travel through Time, and it's entirely possible that it won't matter what directional vector through Time we choose (if we can even take that power of choice/agency)...
      It might also suggest how the Universe is sized and shaped (roughly at my stage of understanding)... If the Universe is actually only limited in Scale to being about 15 Billion YEARS across, then the furthest we can ever visibly see is about 15 Billion Lightyears, since any longer and the light particles slip out of the universe or bump against the "walls" which only exist in Time "substance" but still have effects in the material-space of reality that we CAN directly interact with... The effect would be similar to standing in the center of an enormous colloseum in the dark with only one lit candle. The light can only travel out such that YOU can perceive so far, even if you know for a fact where you are and what's around you... You simply can't directly SEE it... OR maybe something like a "haze" that permanently enshrouds the surroundings, whether or not you hypothesize what lies "beyond", not terribly unlike the microwave background currently (dubiously?) assigned as the residual of the "Big Bang"... only, according to the same proponents of the Big Bang, the universe "is still banging"...
      I don't know all the answers... AND this is just a CRUDE suspicion, I've been toying at for a while, more resolving things "graphically" than through any pure math... SO a grain of salt and all that. Maybe there's a "Big-brain" out there who finds it interesting enough to run with it... or even take her for a slow meander. haha... :o)

    • @philharmer198
      @philharmer198 10 месяцев назад

      How do you know that new quarks and creating mass actually happens , physically ?

    • @philharmer198
      @philharmer198 10 месяцев назад

      @@gnarthdarkanen7464 time though is not a real dimension . Not a real physical dimension . Meaning that eliminating time does eliminate space nor the physical ( the periodic table ) . Both of which are three dimensional in and of themselves . Without time .

  • @chungdhn0624
    @chungdhn0624 2 года назад +32

    Explanation with visualization is simple, straightforward, & powerful. Einstein was a genius & made a great contribution. He is lucky to face a new direction of improvement of his theory by collective minds of his many admirers.

    • @qweqqweq2090
      @qweqqweq2090 2 года назад +1

      I'm not an admirer. he's a bafoon who just made up a bunch of nonsense.

    • @IDrawStuffs
      @IDrawStuffs 2 года назад +3

      @@qweqqweq2090 lmfao okay

    • @LoveOverwhelming
      @LoveOverwhelming Год назад +2

      @@qweqqweq2090 General Relativity has been confirmed in every single test run; it's not nonsense, and without it, GPS wouldn't work.

    • @levelwithz3779
      @levelwithz3779 Год назад

      @@LoveOverwhelming Are you sure about that?

    • @Heracles_FE
      @Heracles_FE 10 месяцев назад

      Einstein was a meat headed plagiarizing cousin marrying falacy factory .
      He destroyed theoretical physics. Now everyone of you accept falacious 'evidence' as evidence. There has not been one postulate proven with the scientific method. Show me how you bent and warped spacetime to prove the bending and warping of spacetime.
      Show me where you measured a contraction or dilation.
      Oh ya , can't do that either .
      Einstein's relativity work is a magnificent mathematical garb which fascinates, dazzles and makes people blind to the underlying errors. The theory is like a beggar clothed in purple whom ignorant people take for a king... its exponents are brilliant men but they are metaphysicists rather than scientists.
      Nikola Tesla

  • @John_II
    @John_II 3 года назад +7

    Will I take 5 minutes out of my day to learn about physics? Absolutely.
    Informative and to the point.

    • @frankdimeglio8216
      @frankdimeglio8216 3 года назад

      She basically does not understand physics. She is not a genius. Here are the facts. THE THEORETICAL, CLEAR, AND UNIVERSAL BALANCING OF E=MC2 AS F=MA:
      Ultimately and truly, time is possible/potential AND actual IN BALANCE, AS E=mc2 IS F=ma; AS electromagnetism/ENERGY IS GRAVITY. SO, time DILATION proves that E=mc2 is DIRECTLY and fundamentally derived from F=ma ON BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!! INSTANTANEITY is thus FUNDAMENTAL to what is the FULL and proper understanding of physics/physical experience, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE, AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. BALANCE AND completeness go hand in hand. (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.) I have mathematically unified and BALANCED physics/physical experience, AS E=mc2 is necessarily AND CLEARLY F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. "Mass"/ENERGY IS GRAVITY. Electromagnetism/ENERGY IS GRAVITY. INDEED, gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE; AS E=MC2 IS F=MA; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, the rotation of the Moon MATCHES it's revolution. Great. It is CLEARLY AND FULLY proven in what is a BALANCED fashion. E=mc2 IS F=ma. In fact, A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course); AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM ENERGY IS GRAVITY. The stars AND PLANETS are POINTS in the night sky. BALANCE AND completeness go hand in hand. It ALL CLEARLY makes perfect sense. Objects fall at the SAME RATE (neglecting air resistance, of course), AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. E=mc2 IS F=ma. It is CLEARLY proven.
      It is a very great truth in physics that the ability of thought to DESCRIBE OR reconfigure sensory experience is ULTIMATELY dependent upon the extent to which THOUGHT IS SIMILAR TO sensory experience, AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. (THOUGHTS ARE INVISIBLE.) INDEED, E=mc2 IS DIRECTLY and fundamentally derived from F=ma; AS time dilation proves that electromagnetism/ENERGY IS GRAVITY. Therefore, ultimately and truly, time is possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. In fact, INSTANTANEITY is FUNDAMENTAL to the FULL and proper understanding of physics/physical experience; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. THE stars AND PLANETS are POINTS in the night sky. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. E=mc2 IS F=ma. GREAT !!! BALANCE AND completeness go hand in hand. It all CLEARLY makes perfect sense. (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.) The INTEGRATED EXTENSIVENESS of THOUGHT (AND description) is improved in the truly superior mind. Gravity IS ELECTROMAGNETISM/ENERGY.
      Consider the man who is standing on what is the Earth/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/ENERGY IS GRAVITY; AS E=mc2 IS F=ma. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. SO, the mathematical unification of Einstein's equations AND Maxwell's equations (given the addition of A FOURTH SPATIAL DIMENSION) proves that E=mc2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Great !!!! Gravity IS ELECTROMAGNETISM/ENERGY.
      Gravity AND ELECTROMAGNETISM/ENERGY are linked AND BALANCED opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY.
      By Frank DiMeglio

    • @richnroll515
      @richnroll515 2 года назад

      @@frankdimeglio8216 What the fuck are you talking about?

  • @douglasmayfield6411
    @douglasmayfield6411 3 года назад +27

    I really enjoy Ms. Hoseenfelder's videos. A question occurred to me as I listened. Why is the defect, or defects, necessarily with GR? Why a defect with quantum mechanics?

    • @zasharan2
      @zasharan2 2 года назад +1

      I may not have authority to say this, as I haven't studied either subject in depth, but my guess is that it might be easier to assume a defect with general relativity. How would one go about using general relativity to explain particle interactions and superpositions? How would general relativity explain entanglement? However, it would be much easier to try and create a new type of boson, and by result a field, which describes gravity with the same or possibly greater accuracy than general relativity. Again, this is all my guess, so you should probably take it with numerous grains of salt.

    • @adamk.4583
      @adamk.4583 2 года назад

      my gut feeling is that QFT has extreme predicting power, while we have found incongruities with general relativity on large scales. i don't know how true that is, however

    • @johnsMITHhhhhh88
      @johnsMITHhhhhh88 2 года назад +3

      It's because the GR equations themselves break down when trying to apply to the quantum scale (would be useful for figuring out how the early universe and black holes work). You get infinities that cannot be taken out so they aren't useful at all. Quantum mechanics also can't describe gravity at that scale so I guess you could call it a defect with that too

    • @Signal_Processing_ML_DL_Com
      @Signal_Processing_ML_DL_Com 2 года назад

      There are 4 fundamental forces.
      Gravity
      EM
      Strong Nuclear
      Weak Nuclear
      Quantum Mechanics explains the last 3 but the first. GR explains the first one but not the last theory.
      This is why a lot of people assume gravity needs to be quantized. There's a hypothesis called Quantum Loop Gravity.
      But the one hypothesis that's widely acceptable is String Theory.

    • @bngr_bngr
      @bngr_bngr 2 года назад

      You are correct. The problem lies with quantum theory. We know both theories are incorrect by themselves. But quantum is a subset of relativity.

  • @Retro6502
    @Retro6502 6 дней назад

    I learned so much from this video. I hope you do more like it in the future! I enjoy your more topical (and humorous) videos, but you're a great educator. The way you presented this information in a clear matter-of-fact manner is wonderful!

  • @georgekhumalo5283
    @georgekhumalo5283 5 лет назад +11

    Sabine, I wish you a happy life and many more subscribers. Totally in love with your brain.

  • @vaibhav7758
    @vaibhav7758 5 лет назад +30

    Its a great video. You explained very well, and clear.
    Every thing was clear.
    Thank you.

    • @ashleylaw
      @ashleylaw 5 лет назад +1

      Except it is all false. Just more fantasy.

    • @Steve-go8yr
      @Steve-go8yr 5 лет назад +1

      Her claims are wrong

    • @vaibhav7758
      @vaibhav7758 5 лет назад

      @@Steve-go8yr please explain breifly.

  • @justchecking905
    @justchecking905 4 года назад +12

    Thank tou Sabine for the clearest explanation I have ever heard regarding this issue! J. D. German, former Prof. of Physics at the U.S. Air Force Academy.

    • @fowlae4414
      @fowlae4414 3 года назад

      Do you sign all of your messages?

  • @RT-mn2pb
    @RT-mn2pb Год назад +9

    Excellent observations about physics profession. I'd been tempted before, but now I must buy your book. It reinforces something sad for me. I graduated with a degree in physics but spent my whole career in computing instead. Now, sadly, I'm glad I did not spend the last 40 years in physics.

    • @marcosalazar7090
      @marcosalazar7090 Год назад

      They just created a wormhole. It's a good time to go to physics

  • @urn5517
    @urn5517 2 года назад +16

    Thanks Sabine for explaining these difficult subjects with simple diagrams. You can enhance communication of the subject by allowing your demo diagrams to dominate the background on the board instead of the unrelated design pattern.

  • @counlex
    @counlex 3 года назад +277

    Attracted by title, even though I knew I wouldn’t understand a single word

    • @vernonvouga5869
      @vernonvouga5869 3 года назад +7

      I love the way she says Einstein. We live in a country full of people from other countries, unless you're living in another country. LOL

    • @lutherhoward7637
      @lutherhoward7637 3 года назад +5

      @@vernonvouga5869 😂. It takes a lot of studies and hard work to begin to understand what she is explaining. But physics is not for everyone, and it doesn't have to be. There are many other things to learn like finance or medicine.

    • @vernonvouga5869
      @vernonvouga5869 3 года назад +3

      @@lutherhoward7637 I've had a passion that started with astronomy and branched out into physics since i was young. Vortexes are my favorite intrest... i mean, literally everything in nature follows a vortex in one way or another

    • @lutherhoward7637
      @lutherhoward7637 3 года назад +3

      @@vernonvouga5869 I wish everyone would take some interest in nature like you have. It increases your neurons like lifting weights for your brain.

    • @vernonvouga5869
      @vernonvouga5869 3 года назад +1

      @@lutherhoward7637 haha, when i was a cable man a few years ago on breaks... i found it a fascinating thought experiment to think about how thin the earths atmosphere is and the fact that its weight is what keeps us together

  • @nightshadegatito
    @nightshadegatito 3 года назад +13

    Wow thank you. I appreciate your elucidation of singularities being an indication that the current working theory is not fundamental. I have been watching videos about black holes and your video finally gives my curiosity some useful closure.

  • @jcb9284
    @jcb9284 Год назад +21

    I love how everybody considers whether or not relativity is correct but nobody considers whether or not quantum physics is correct or not

    • @gregmarsters2434
      @gregmarsters2434 Год назад

      It's a numbers game. They both give super accurate predictions within their limmits.

    • @joshuasweeny3737
      @joshuasweeny3737 Год назад +4

      I think not understanding what a singularity truly is at the center of a black hole isn't a good enough reason to assume Einstein was wrong.

    • @jettmthebluedragon
      @jettmthebluedragon Год назад +2

      @@joshuasweeny3737that is even if black holes even exist 😑I have realized they may not 😐the way galaxies work is like hurricanes as their physical properties are somewhat the same 😐

    • @rationaloperator4165
      @rationaloperator4165 Год назад +2

      Exactly, and in newer videos, Sabine herself seems to question quantum theory, and prefers superdeterminism that completely undermines it, I do too.

    • @joshuasweeny3737
      @joshuasweeny3737 11 месяцев назад

      we have confirmed that Black holes indeed exist
      @@jettmthebluedragon

  • @StaticBlaster
    @StaticBlaster 4 года назад +25

    I frickin love science especially astronomy, physics, the union that is astrophysics, cosmology, QM, QT, and GUT/TOEs.

    • @gilian2587
      @gilian2587 4 года назад

      Go into engineering -- you'll have a better chance at feeding yourself.

    • @wakemeup9343
      @wakemeup9343 4 года назад +1

      I know! astrology is awesome. I'm a gemini

    • @warkunitale
      @warkunitale 4 года назад

      @@wakemeup9343 ... okay

    • @irokosalei5133
      @irokosalei5133 3 года назад +1

      @@wakemeup9343 I'm a sagittarius.

    • @wakemeup9343
      @wakemeup9343 3 года назад

      @@warkunitale /r/woosh

  • @prosimulate
    @prosimulate 4 года назад +15

    Best 5min physics lecture I have ever experienced Sabine, totally sublime !

  • @NondescriptMammal
    @NondescriptMammal 2 года назад +8

    Very much appreciate the explanation. It's refreshing to see a video involving physics and cosmology that admits what we don't know, even with a very well-supported theory, rather than stating that theory as if it was indisputable fact. Thank you!

  • @KhaledKimboo4
    @KhaledKimboo4 Год назад +2

    It's like your software developer criticize von Newman of his invention of a slow computer compared to what he's using today. Rephrase it to "thanks to the genius of Einstein, we can now understand better his theory of GR", that's because everyone is considering himself a scientist today.

  • @peach7469
    @peach7469 4 года назад +11

    That was a stunning background.

    • @9and7
      @9and7 3 года назад +1

      And a stunning outfit...

  • @RAYNINGMAKER
    @RAYNINGMAKER 3 года назад +303

    Wait, I know this woman.
    > Sprints to shelf
    Oh yeah, that Book.
    Read "Lost in Math". It's basically her dunking on her colleagues for 250 pages.

    • @SameerGuptacatchymango
      @SameerGuptacatchymango 3 года назад +19

      Love learning from polemicists :P that’s what made Lenin so awesome, he was keenly aware of what others were saying and thinking, and was always eager for debate

    • @RAYNINGMAKER
      @RAYNINGMAKER 3 года назад +60

      @@SameerGuptacatchymango wha-

    • @realSpook
      @realSpook 3 года назад +5

      Nerd

    • @Blue-Maned_Hawk
      @Blue-Maned_Hawk 3 года назад +2

      KLFHvuhwn0B(uvI***@*20djjjJ(JJCA)BOhijoks

    • @frankdimeglio8216
      @frankdimeglio8216 3 года назад +3

      @@SameerGuptacatchymango WHY ELECTROMAGNETISM/ENERGY IS UNIFIED AND BALANCED WITH/AS WHAT IS GRAVITY:
      Gravity AND ELECTROMAGNETISM/ENERGY are LINKED AND BALANCED opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Therefore, Einstein's equations and Maxwell's equations are unified (given the addition of a fourth spatial dimension); AS E=mc2 is DIRECTLY and fundamentally derived from F=ma; AS TIME DILATION proves that electromagnetism/ENERGY IS GRAVITY. ACCORDINGLY, Einstein's equations predict that SPACE is expanding OR contracting in and with TIME; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!! (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.)
      Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, the rotation of the Moon MATCHES it's revolution. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/ENERGY IS GRAVITY.
      Gravity IS ELECTROMAGNETISM/ENERGY. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. THE SUN purely exemplifies time DILATION. INSTANTANEITY is FUNDAMENTAL. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!!
      The stars AND PLANETS are POINTS in the night sky. Let's compare this directly with BOTH a falling object AND the speed of light (c). Great. E=mc2 IS F=ma. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. INSTANTANEITY is FUNDAMENTAL to the FULL and proper understanding of physics/physical experience. Ultimately and truly, TIME is possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. The ultimate unification of physics/physical experience combines, BALANCES, AND includes opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT. It ALL makes perfect sense. THINK !!!
      The Earth that undergoes time DILATION IS thus represented (ON BALANCE) as what is A POINT in the night sky, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. (So, notice that the BLUE SKY IS no longer visible. Think.) E=mc2 IS F=ma. It is FULLY proven. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Alas, the INTEGRATED EXTENSIVENESS of THOUGHT (AND description) is improved in the truly superior mind. I have truly, CLEARLY, AND MATHEMATICALLY unified physics/physical experience. OVERLAY what is THE EYE in BALANCED RELATION to/WITH what is THE EARTH. (Notice the black space of THE EYE, AND the DOME of a person's eye is ALSO visible.) THE EARTH is ALSO blue. Again, E=mc2 IS F=ma. The stars AND PLANETS are POINTS in the night sky. Time dilation proves that E=mc2 is DIRECTLY and fundamentally derived from F=ma, AS electromagnetism/ENERGY IS GRAVITY. It ALL makes perfect sense. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. BALANCE AND completeness go hand in hand.
      By Frank DiMeglio

  • @Ytremz
    @Ytremz 2 года назад +53

    Gravity seems more so like an emergent effect. I get the feeling that trying to quantise gravity may be a red herring.

    • @coreysherman2143
      @coreysherman2143 2 года назад +1

      I feel the same way, but I'm also just a philosopher and not a physicist, so I'm not sure why physicists think it's a worthwhile pursuit

    • @stevelarry3870
      @stevelarry3870 Год назад +3

      Bro thought he solved physics in the RUclips comment section

    • @Ytremz
      @Ytremz Год назад

      @@stevelarry3870 Scientific breakthroughs can begin anywhere. 😊

    • @stevelarry3870
      @stevelarry3870 Год назад +1

      @@Ytremz They definitely aren't going to occur here my man.

    • @LoveOverwhelming
      @LoveOverwhelming Год назад

      @@coreysherman2143 Because it offers a way forward, where as "it's an emergent effect maybe!" doesn't.

  • @Brent-bm2bf
    @Brent-bm2bf Год назад

    Great channel, your delivery is calm, your voice easy to listen to, Thank You.

  • @TurboNym
    @TurboNym 3 года назад +8

    This is the one area of science where the human brain really shows its kung fu... to be able to develop a new kind of intuition to understand this subject...very fascinating. It really feels like gravity is not only bending light, but also the mind. Physics is as much a science as it is an art. Thank you for sharing this wonderful knowledge with us!

  • @IainMcClatchie
    @IainMcClatchie 5 лет назад +21

    Sabine, thank you for another short clear video.
    If GR and QM are incompatible, then there should be some circumstances in which they make different predictions. Arranging those circumstances is then an experiment to tease out data to refine the theories. Surely there has been significant work towards this goal. Can you make a video telling us about that work?

    • @michaelhutson6758
      @michaelhutson6758 5 лет назад +3

      Unfortunately the only circumstances we can think of where the two theories would produce an observable conflict would be extreme conditions like particle-sized black holes. Unless nature is obliging enough to present us with one, we aren't going to be able to rely on observation.

    • @michaelhutson6758
      @michaelhutson6758 4 года назад

      @Dr Deuteron I didn't mean inside the black holes, I meant just outside the horizon of quantum-scale black holes. Which is tantamount to asking how the two theories behave at extremely high energy scales. It's observable _in principle_, we just haven't stumbled across a real-world example that would allow us to work back from observations to a unified theory.

    • @MuitaMerdaAoVivo
      @MuitaMerdaAoVivo 4 года назад

      ​@Dr Deuteron The big problem is: quantum theory gave us the best matching theoretical and experimental results of any physics theory (including GR) and it doesn't include gravitational interactions or interference (like gravity doesn't exist on that scale), in fact if you try to apply gravity as a force (as the standard model sugests it shoud be), the interactions between gravitons and other particles generate a infinite loop of energy, creating infinite black holes.
      I think the big problem is describing space itself, if we could describe space in the quantum level, we would be able to explain why gravity is so weak, why it seems to stop working on quantum scales and maybe Einstein's Equations would come from approximations due to scale factors, just like the galilean transformations for motion were an aproximaximation for Lorentz transformations in low speeds.

  • @AdamChristensen
    @AdamChristensen 5 лет назад +11

    Thank you. My head hurts in the best way possible. It's fun to think about these universe scale concepts!

  • @northeastweathermikebarlet2399

    By far the best and simplest video I’ve ever seen on this topic. Thank you.

  • @thechisensei
    @thechisensei 3 года назад +7

    subscribed! you talk like a scientists/educator, not a journalist/vlogger. makes me feel im in a classroom, learning mode switched on. thanks!

  • @pjmoran42
    @pjmoran42 5 лет назад +27

    Clearly explained! Keep up the good work!

  • @jmcsquared18
    @jmcsquared18 5 лет назад +457

    By the same logic, we also know quantum theory can't be completely correct.

    • @desiderata8811
      @desiderata8811 5 лет назад +44

      jmcsquared. I’d love to see Quantum Mechanics wrong and General Relativity right.
      But maybe there’s something she didn’t explain that and makes her, or them, think otherwise.

    • @jmcsquared18
      @jmcsquared18 5 лет назад +21

      @@desiderata8811 I actually think both theories will need to give a little bit before a quantum theory of gravity emerges. One that doesn't just presuppose the supremacy of either theory. In fact, recent research (see Susskind, Maldacena) suggests that the two theories are actually related in many ways.

    • @joshmnky
      @joshmnky 5 лет назад +70

      I was thinking the same thing. Quantum Theory doesn't match General Relatively, so General Relativity must be wrong, says the particle physicist.

    • @josefopeda
      @josefopeda 5 лет назад +56

      I wouldn't say not correct, more "incomplete".

    • @desiderata8811
      @desiderata8811 5 лет назад +16

      jmcsquared. Both being incomplete but related is exactly what makes physicists nuts, and drives them to search a new theory to unify them.
      From what I’ve seen String Theory is almost out of the game. It seems we are far from achieving something new.

  • @TomislavLukic-sl9gx
    @TomislavLukic-sl9gx 5 месяцев назад

    I've known meny information from this video but it's nice that we can find all these informations in one video. Thank you for clear explanation.😊

  • @frankciborski835
    @frankciborski835 3 года назад +4

    For someone like me for whom so much of this stuff is over his or her head... Yet has a curiosity whose appetite "snacks" on a lot of it... Such people as Sabine (and Victor Toth on Quora) who are as knowledgeable as they are and explain as concisely well as they do to laymen are very satisfying. They not only know their "nuts & bolts", they connect dots and have illuminating insight into what they explain. Very satisfying and whets the appetites of "snackers" like myself for more. Kudos and thanks.

    • @feynmanschwingere_mc2270
      @feynmanschwingere_mc2270 3 года назад +4

      This video is absolute nonsense. According to Fields Medal winner and the greatest living mathematical physicist, Ed Witten, somebody whose physics acumen far exceeds Sabinr Hossfelder, General Relativity is the ONLY theory ever invented - before or since - that can account for WHY gravity obeys an inverse square law. Newton's theory couldn't do that. This was a HUGE clue to actual geniuses like Dirac and Witten, not this clown Hossfelder, that General Relativity must be true. This aspect of General Relativity, which she CONVENIENTLY omits in this post-hoc riddled video, gives it universal credibility amongst REAL physicists even as we look for a Theory of Everything.
      General Relativity is 100% CORRECT for the observational scope we have. She might as well titled this video "How we Know Quantum Mechanics is Not Quite Right" seeing as there as just as many open, unsolved questions in Quantum Mechanics (if not more) than there are in General Relativity. And thus far not one single theory of quantum gravity has any scientific consensus unless you count String Theory.
      This has to be the worst video Sabine has ever made. 100% Click Bait Trash, it gives the impression that General Relativity has been falsified and it has NEVER BEEN FALSIFIED. Any problems with the theory are very abstract and non-empirical. I repeat, Quantum Mechanics has just as many problems, if not more, than General Relativity.

  • @massecl
    @massecl 5 лет назад +258

    Why is general relativity the one that ought not to be quite right, and not quantum mechanics?
    Ok, I shut up and calculate, sorry.

    • @aminnegm-awad6076
      @aminnegm-awad6076 5 лет назад +29

      Exactly my thought.

    • @johnbell4328
      @johnbell4328 5 лет назад +20

      Hossenfelder is a Quantum Gravity proponent. Essentially her work argues for this as an alternative to String Theory. I don't take a side as I left physics for CS long ago and was never a theorist.

    • @anttumurikka8728
      @anttumurikka8728 5 лет назад

      @mxt mxt they are both wrong when goes 0,00000000000001 accord, people are very close brake that barrier, we have super computers to calculate things einstein could even dream

    • @rawstarmusic
      @rawstarmusic 5 лет назад +2

      You can ask the question. Maybe they can both be right, they work well together but the theories does not. So we have a blurred view of their interaction that we can not see. They can be expressions of dark matter of which we can't see.

    • @danielbaeta898
      @danielbaeta898 5 лет назад +65

      None of them are wrong. Both are probably incomplete. General relativity is easier to modify without blowing up the universe.

  • @iceholerealms
    @iceholerealms 5 лет назад +36

    See Quantum Gravity appear to move the host from side to side of the video.

    • @sandrabbitlane
      @sandrabbitlane 5 лет назад

      🤣

    • @238assante
      @238assante 5 лет назад +1

      haha, yes she tried to live out the double slit experiment and be at two places at once., but failed... and thus won't get fringe benefits.

  • @morkoan70
    @morkoan70 Год назад +1

    Exceptional summary

  • @fergalfarrelly8545
    @fergalfarrelly8545 4 года назад +24

    I always thought general relitivity was right and the problem was in quantum mechanics. Superposition may be wrong. The Copenhagen interpretation may be wrong as Schrodinger described.

    • @gameguy8101
      @gameguy8101 4 года назад +7

      This seems like a much more popular view from what I've seen of current greats in the field
      Sabine seems to have a very narrow view that she is right absolutely which I get from most of her videos, when talking about disputed things. She gives some nice general info on physics, but has a pretty poor presentation of the science.

    • @Overtime123
      @Overtime123 4 года назад +4

      I completely agree. Tim Maudlin puts the point well when he says that quantum mechanics is not a theory but rather a recipe for making calculations. It does not specify a self-consistent ontology for space and time - especially the Copenhagen interpretation of QM. GR is a thing of beauty, precisely because it specifies an ontology so well and so completely. She has unfortunately got the wrong end of the stick on this video.

    • @psychohist
      @psychohist 4 года назад

      Superposition has been shown to be extremely accurate, though that doesn't mean it's "right". The Copenhagen interpretation has been basically disproven.

    • @KW-12
      @KW-12 3 года назад

      I also see QM as a math tool that describes and predicts what happens to atom-scale objects but I don’t like Coppenhagen interpretation. Very anti intuitive
      Have you ever heard of Pilot Wave theory?

    • @KW-12
      @KW-12 3 года назад

      @@psychohist :0 how it was disproven? I am interested. Do you have the article?

  • @rbnootan101
    @rbnootan101 3 года назад +13

    Sabine, another great explanation of Physics. As a physicist and micro biologist myself, I think you are so important in promoting the exciting Pandora's box of the world around us.. Bravo!

    • @vernonfrance2974
      @vernonfrance2974 3 года назад +1

      What is exciting about Pandora's box?

    • @AB-zg5vy
      @AB-zg5vy 3 года назад +1

      How can you be physicist and micro biologist at the same time?
      And how much time after your 12th class you devoted in both fiieds in just study?
      That must be very long time bec in just doing grad and post grad...it takes 7 8 or even 9 years....pl answer

    • @rbnootan101
      @rbnootan101 3 года назад

      @@AB-zg5vy If you cannot figure it out then you clearly do not understand. I am retired, throughout my career I have been in both camps and went to excellent schools when young that set me on these speciality tracks. I have worked in Gov research since young. That is all you will get.

    • @rbnootan101
      @rbnootan101 3 года назад

      @@vernonfrance2974 investigate science and you might just find out. With every answer in science comes more questions. Never dull, always challenging current models of thought.

    • @raineman1118
      @raineman1118 3 года назад

      Probably not very good at either profession

  • @rickstokes2239
    @rickstokes2239 2 года назад +8

    Lovely way of conveying technical subjects elegantly and understandably. Thank you.

  • @tom_curtis
    @tom_curtis 11 месяцев назад +1

    Surely, proof that Quantum Mechanics and General Relativity are inconsistent is not proof that General Relativity must be replaced, but rather proof that either QM or GR or both must be replaced.

  • @MrJoeDone
    @MrJoeDone 2 года назад +4

    you got to love the information density in this video. very informative and interesting video

  • @7myles
    @7myles 3 года назад +16

    I'm just glad that she took the time and energy yo exp in it to us in a condensed format!😅

    • @Antonocon
      @Antonocon 3 года назад +1

      And that she did it in this online space that the whole world gravitates to.

    • @frankdimeglio8216
      @frankdimeglio8216 3 года назад

      WHY ELECTROMAGNETISM/ENERGY IS UNIFIED AND BALANCED WITH/AS WHAT IS GRAVITY:
      Gravity AND ELECTROMAGNETISM/ENERGY are LINKED AND BALANCED opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Therefore, Einstein's equations and Maxwell's equations are unified (given the addition of a fourth spatial dimension); AS E=mc2 is DIRECTLY and fundamentally derived from F=ma; AS TIME DILATION proves that electromagnetism/ENERGY IS GRAVITY. ACCORDINGLY, Einstein's equations predict that SPACE is expanding OR contracting in and with TIME; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!! (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.)
      Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, the rotation of the Moon MATCHES it's revolution. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/ENERGY IS GRAVITY.
      Gravity IS ELECTROMAGNETISM/ENERGY. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. THE SUN purely exemplifies time DILATION. INSTANTANEITY is FUNDAMENTAL. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!!
      The stars AND PLANETS are POINTS in the night sky. Let's compare this directly with BOTH a falling object AND the speed of light (c). Great. E=mc2 IS F=ma. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. INSTANTANEITY is FUNDAMENTAL to the FULL and proper understanding of physics/physical experience. Ultimately and truly, TIME is possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. The ultimate unification of physics/physical experience combines, BALANCES, AND includes opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT. It ALL makes perfect sense. THINK !!!
      The Earth that undergoes time DILATION IS thus represented (ON BALANCE) as what is A POINT in the night sky, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. (So, notice that the BLUE SKY IS no longer visible. Think.) E=mc2 IS F=ma. It is FULLY proven. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Alas, the INTEGRATED EXTENSIVENESS of THOUGHT (AND description) is improved in the truly superior mind. I have truly, CLEARLY, AND MATHEMATICALLY unified physics/physical experience. OVERLAY what is THE EYE in BALANCED RELATION to/WITH what is THE EARTH. (Notice the black space of THE EYE, AND the DOME of a person's eye is ALSO visible.) THE EARTH is ALSO blue. Again, E=mc2 IS F=ma. The stars AND PLANETS are POINTS in the night sky. Time dilation proves that E=mc2 is DIRECTLY and fundamentally derived from F=ma, AS electromagnetism/ENERGY IS GRAVITY. It ALL makes perfect sense. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. BALANCE AND completeness go hand in hand.
      By Frank DiMeglio

    • @frankdimeglio8216
      @frankdimeglio8216 3 года назад

      @@Antonocon WHY ELECTROMAGNETISM/ENERGY IS UNIFIED AND BALANCED WITH/AS WHAT IS GRAVITY:
      Gravity AND ELECTROMAGNETISM/ENERGY are LINKED AND BALANCED opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Therefore, Einstein's equations and Maxwell's equations are unified (given the addition of a fourth spatial dimension); AS E=mc2 is DIRECTLY and fundamentally derived from F=ma; AS TIME DILATION proves that electromagnetism/ENERGY IS GRAVITY. ACCORDINGLY, Einstein's equations predict that SPACE is expanding OR contracting in and with TIME; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!! (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.)
      Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, the rotation of the Moon MATCHES it's revolution. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Accordingly, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/ENERGY IS GRAVITY.
      Gravity IS ELECTROMAGNETISM/ENERGY. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. THE SUN purely exemplifies time DILATION. INSTANTANEITY is FUNDAMENTAL. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT !!!
      The stars AND PLANETS are POINTS in the night sky. Let's compare this directly with BOTH a falling object AND the speed of light (c). Great. E=mc2 IS F=ma. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. INSTANTANEITY is FUNDAMENTAL to the FULL and proper understanding of physics/physical experience. Ultimately and truly, TIME is possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. The ultimate unification of physics/physical experience combines, BALANCES, AND includes opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. GREAT. It ALL makes perfect sense. THINK !!!
      The Earth that undergoes time DILATION IS thus represented (ON BALANCE) as what is A POINT in the night sky, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. (So, notice that the BLUE SKY IS no longer visible. Think.) E=mc2 IS F=ma. It is FULLY proven. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. Alas, the INTEGRATED EXTENSIVENESS of THOUGHT (AND description) is improved in the truly superior mind. I have truly, CLEARLY, AND MATHEMATICALLY unified physics/physical experience. OVERLAY what is THE EYE in BALANCED RELATION to/WITH what is THE EARTH. (Notice the black space of THE EYE, AND the DOME of a person's eye is ALSO visible.) THE EARTH is ALSO blue. Again, E=mc2 IS F=ma. The stars AND PLANETS are POINTS in the night sky. Time dilation proves that E=mc2 is DIRECTLY and fundamentally derived from F=ma, AS electromagnetism/ENERGY IS GRAVITY. It ALL makes perfect sense. Gravity IS ELECTROMAGNETISM/ENERGY. ELECTROMAGNETISM/ENERGY IS GRAVITY. BALANCE AND completeness go hand in hand.
      By Frank DiMeglio

    • @tuckergary1516
      @tuckergary1516 3 года назад +1

      me too i think my brain is expanding.

  • @elli003
    @elli003 3 года назад +8

    I find it works well enough to get me from one planet to another. - Klaatu

  • @SaleemRanaAuthor
    @SaleemRanaAuthor 2 года назад +5

    I love these mini episodes. I never thought about this before! It never occurred to me that the apparently irreconcilable conflict between the well-established theories of general relativity and quantum mechanics suggests that both theories are not quite right, which means we need a bridge theory to resolve the discrepancies.

    • @komolkovathana8568
      @komolkovathana8568 Год назад

      Some theory to link Elephant or Whale to microbe-like Ameoba (or even virus). To difficult to apprehend.

    • @komolkovathana8568
      @komolkovathana8568 Год назад

      They wanna understand Whale/Elephant language by studying Viruses or microbes, how bacteria is communicating, through chemicals/smell ??
      Elephants and animals do smelling and secreting to communicate!?! So can it be successful..theory of quantum gravity ; linking electron/quarks to celestial Galaxies?!?

  • @charickter
    @charickter 4 года назад +14

    Not just smart as hell, my girl got style, too!
    Thank you so much for the content, Dr. Hossenfelder! 💙 You make me smarter and the Universe just a wee bit clearer.

  • @mikekeenan8450
    @mikekeenan8450 3 года назад +136

    Some would say a better title would be "How we know that general relativity and quantum theory can't both be right".

    • @geraldwatts5492
      @geraldwatts5492 3 года назад +12

      Yea, and this is nothing new, even Einstein knew this and wanted to unify gravitation with the electromagnetic, strong, and weak forces. String theory is one recent attempt at this, but with some very unusual implications.

    • @lordemed1
      @lordemed1 3 года назад

      we re all waiting for the theory that transcends both of them.

    • @KaitharVideo
      @KaitharVideo 3 года назад +8

      This is unfortunately what happens when people approach a problem with the idea that quantum mechanics must be right, when quantum theories still hold more uncertainty than the location of the electron I dropped last week.
      The correct title, if we're being honest, is "We have no idea how gravity works, here are some flawed partial theories we need to integrate" since GR's curved spacetime isn't even properly compatible with Newtonian force models and energy conservation.

    • @thetruthshed
      @thetruthshed 3 года назад +3

      @@KaitharVideo Read the Bible. It's not a science textbook but has answers that scientists search for and theorize answers for while stepping out of bounds. Not related to this topic but Psalm 60 got to plate tectonics information centuries before it was "discovered" while giving its cause and another reason by another source beyond physical observation. And the universe expanding yet being held together is also explained in the Bible in ways that physics has just recently attempted to explain. If parts of relativity are true, then the center of the universe could be anywhere, including earth. But what is Truth, many of us are too similar to Pontius Pilate in the way we ask questions. Glad you see the flaws of quantum theory, and hope you consider the possibility that we conscious beings on this earth may not be self centered in believing our status and effect in the universe could be above everything else in it because there is one beyond and outside it that made it all.

    • @backstabber3537
      @backstabber3537 3 года назад +23

      @@thetruthshed read Bible ?🤣🤣🤣 good one bro

  • @PaterTenebrarum1
    @PaterTenebrarum1 4 года назад +173

    I discovered the quantum theory of gravity yesterday evening in my bathtub, but decided not to publish it. It’s too triggering.

    • @ematarkus4121
      @ematarkus4121 4 года назад +7

      its of electric nature. could lead into that the earth is flat :/

    • @vikramgupta2326
      @vikramgupta2326 4 года назад +9

      Kind of like Fermat's last theorem.😁

    • @Chicken_Little_Syndrome
      @Chicken_Little_Syndrome 4 года назад +15

      @@ematarkus4121 So 2+2=5? Electrical nature leads to Earth being round. The magnetic field is not flat. Everyone knows that Flat Earthers do not exist. They are bored NASA employees with a predilection for online pranks. We all know that Flat Earth is an obvious aerospace hoax.

    • @larrykemet6709
      @larrykemet6709 4 года назад +1

      you did well hahaha

    • @cidfacetious3722
      @cidfacetious3722 4 года назад +4

      I know the secret gravity is anti-feminist if you exposed it gravity would be canceled and we would all die

  • @lightweave
    @lightweave 6 месяцев назад

    Interesting video! I never understood why this information loss should be a problem or how it even works, but Sabine said it with one word, so that I finally understood it. Because it's random. In all the explanations I have seen so far, they got to great length but here I got the key ingredient with a single word. Thanks! 👍

  • @thomasherbig
    @thomasherbig 4 года назад +6

    Well - that was outstanding! Thank you!

  • @fancymcclean6210
    @fancymcclean6210 4 года назад +5

    Fantastic! I love the way Sabine explains highly complex concepts simply and with authority. Flaxen Saxon.

  • @matajification
    @matajification 3 года назад +34

    Compared to the other forces of nature, gravitation is extremely weak. When you pick up a nail with a magnet, the magnetic force of that small magnet overcomes the gravitational force of the entire Earth. Interaction of gravity with other forces is therefore extremely hard to measure. It is possible to measure the gravitational field of something heavy, like lead spheres of the Cavendish experiment, but it's impossible to measure gravitational field of a quantum particle. And, if there are no reliable measurements, there can be no reliable theory.
    That's why a huge and expensive experiment like LHC had to be built in order to prove the existence of Higgs Boson, for example. The road towards reconciliation of General Relativity with Quantum Mechanics will be a hard & expensive one, I'm afraid, but, IMHO, this goal is definitively worth pursuing.

    • @MrRenanwill
      @MrRenanwill 2 года назад +1

      The same could be said for any scientist.

    • @peternguyen3645
      @peternguyen3645 Год назад

      Bro depends on the density of the object. Try using magnetic force on the surface of a black hole lmao

    • @matajification
      @matajification Год назад

      @@peternguyen3645 Might be interesting indeed, especially around magnetar like black hole.

  • @fwwryh7862
    @fwwryh7862 2 месяца назад

    Your explanations are clear and simple.

  • @MukbangMukbangMukbang111
    @MukbangMukbangMukbang111 3 года назад +11

    Wow, this just has put so many things into perspective for me regarding general relatively and such. I feel like it will never all fit together and in fact it’ll probably fit together even less the more we learn about quantum physics because regular physics is a projection of quantum physics which isn’t in the realm of time and space which is beyond the natural form of cause and effect in the way we know it. This is just my view though in my very limited understanding.

  • @aminnegm-awad6076
    @aminnegm-awad6076 5 лет назад +4

    It is true, that Hossenfelder might say that quantum physics is the wrong part. But Hossenfelder's approach is more than "theory of relativity vs. quantum physics". She doubts many concepts of the mainstream.
    After nearly a century of failing to unify both columns of modern physics, doubts might be correct.

  • @JavierArveloCruzSantana
    @JavierArveloCruzSantana 5 лет назад +14

    Glad to have found this channel. It's been added to my list of physics channels!
    I, however, wish that the flat sheet representing matter's effects on spacetime were replaced by the more accurate 3D models we can create now, which show matter pulling in spacetime and not pushing it down.

    • @billwesley
      @billwesley 5 лет назад

      They should say space becomes compressed and time rarefied, space attracted and time repelled. People understand the atmosphere becomes more compressed closer to the earth and more rarefied further way, they also understand that aircraft fly faster further from the earth where the air is thin for less energy. If we think of space as atmosphere and inhibition to motion in an atmosphere as "time dilation" the basic idea will be understood in day to day terms.

    • @espaciohexadimencional6798
      @espaciohexadimencional6798 5 лет назад

      its a good one I will suscribe she is a figure kind of laddy.

    • @SernasHeptaDimesionalSpace
      @SernasHeptaDimesionalSpace 5 лет назад

      how about since all is light and light behaves as water dont we see it as a cicle and whene comes as rain is the one that makes the push¡?

  • @ashwinkumarsharma7888
    @ashwinkumarsharma7888 Год назад +2

    🇮🇳👍Lots of thanks and all the very best for more work like this😎🎛.
    📝Respected Madam i found your detailed and clear descriptions are very much easy for cognition.
    🧐My understanding and knowledge about general and special relativity theories wasn't such superfluous ever before. My concepts got clear view within just starting one and half minute time of your this vedio.
    🗺🔭🔬📱🧮 All dots of knowledge about relativity got synchronized to form easy picture of the two theories in my mind. I guess the picture of various thickness lines in background is specially as well as generally related and supportive to the cognition of the subject presented.

  • @alanbarnett718
    @alanbarnett718 5 лет назад +17

    I think she's the first person I ever heard pronounce Einstein's name right!

    • @bariseker4193
      @bariseker4193 5 лет назад +9

      Yea because she is German.

    • @christopherlewis9684
      @christopherlewis9684 5 лет назад

      Liar. You wouldn’t know it was a correct pronunciation unless you had heard it before lol

    • @alanbarnett718
      @alanbarnett718 5 лет назад +2

      Einstein spoke German as his first language. Of course his name was pronounced Ein-shtein; I just never heard a German-speaking person say it before!

    • @hermask815
      @hermask815 5 лет назад

      I only accept Mel Brooks as expert for the pronunciation of any name.

    • @alanbarnett718
      @alanbarnett718 5 лет назад

      Ah, but is it Fronkenshteen... or FRANKENSTEIN!!!

  • @LarsHolmVV46
    @LarsHolmVV46 5 лет назад +11

    Excellent - well done. Perhaps You are planning a similar review on why quantum mechanics like GR can't be quite right.

    • @billwesley
      @billwesley 5 лет назад +2

      Also a big bang cosmology that depends on 4 % actual evidence and 96% on missing ("dark") evidence

    • @DinarAndFriends
      @DinarAndFriends 5 лет назад +1

      @@billwesley Why would they care if there is evidence or not? Their salary doesn't depend on anything they say being related to the real world.

    • @billwesley
      @billwesley 5 лет назад +1

      @@DinarAndFriends sadly apparently so. Its always about the good old boys club, especially where there are no good old girls we know there is something amiss.

  • @palfers1
    @palfers1 5 лет назад +67

    A series of mini black holes approaches a double slit, one at a time. The first one eats the slits and then eats the screen behind. Shit!

    • @kəanıncupıdo
      @kəanıncupıdo 5 лет назад +1

      lol!

    • @Novasky2007
      @Novasky2007 5 лет назад +3

      Its ok the screen and the slits are just stored upon the furry surface.

    • @LouisEmery
      @LouisEmery 4 года назад

      I'm picturing a physics professor saying that in a graduate physics course.

    • @Novasky2007
      @Novasky2007 4 года назад

      Craig the interference pattern is recordable, hell if you set the lazers up correctly visible to the naked eye. Wave-particle duality is possibly the thing we have the most evidence of in all of quantum mechanics

    • @Novasky2007
      @Novasky2007 4 года назад

      You don't fully understand the subject matter. You are muddling Heisenberg's uncertainty principal that is to do with measuring the deviation of momentum and position. You are right it doesn't proove a single photon was in two places at the same time, it prooves it is in two places at different times and able to affect its own resulting final location...Twice. Like hitting a white ball in snooker and it bouncing off its future self before being able to strike the pack of reds. Its no wonder people find the concept confusing.

  • @phil20_20
    @phil20_20 Год назад +1

    He had to add an extra variable to his calculations to make his equation work. He said it was the biggest mistake of his life.

  • @GSPV33
    @GSPV33 3 года назад +5

    So glad I found this channel. Love your content.

  • @bhangrafan4480
    @bhangrafan4480 5 лет назад +23

    All physical theories work in certain circumstances but become less accurate in others. This is because they are models. Each model captures a set of relationships of interest in one context, but there may be other contexts in which different sets of relationships, or dimensions become important.

    • @JamesJoyce12
      @JamesJoyce12 5 лет назад

      "All physical theories work in certain circumstances but become less accurate in others. " - the semantic content of that is null - you have said exactly nothing.

    • @bhangrafan4480
      @bhangrafan4480 5 лет назад +9

      @@JamesJoyce12 It's meaning is quite clear to anyone familiar with basic physics. Typically I am talking about scale. For example if you want to fire a bullet at a target Newton's law of gravitation is adequate to do it accurately. If you want to predict the orbit of Mercury then because of the intensity of the gravitational field you have to use Einstein's Theory. A flat Earth theory is ok for surveyors to plan a housing estate, but it is no good to calculate the fuel requirement or plot a course for a trans-Atlantic flight. Most people with a physics background would be familiar with this situation. The main point though is that no theory is universal, because there may be other dimensions to a situation being modelled which are not included in one theory. Any model focuses on certain features of interest, but leaves out others. Under other circumstances these features may prove important and you need to use a different model. Any model is a simplification of something not the thing itself. This is of course an advantage of a model as well as an imperfection.

    • @allenjenkins7947
      @allenjenkins7947 5 лет назад +3

      @@JamesJoyce12 The semantic content of the first sentence may be null, but the whole quote is perfectly clear to me. Newton's laws of motion and gravity were perfectly adequate for his time and place, only becoming less accurate when people started to move faster than the speed of a horse, or steam locomotive. Or to communicate via telegraph or radio. Einstein's laws/theories provide a much better model when we start to deal with satellite communications, GPS and the universe on the large scale. However, the model breaks down at the interface between the very small and very large. One day it will be shown that Einstein's theories are just a better approximation to reality than Newton's, but neither is the final word. The important thing here is that all are models.

    • @JamesJoyce12
      @JamesJoyce12 5 лет назад

      @@bhangrafan4480 You need to understand what a 'theory' is - my theory says that it will be 22.4 C outside - inevitably - at some time - it will be 22.4 C and it also fulfills your definition of a 'physical theory' but we would both agree it is not a theory - right?

    • @bhangrafan4480
      @bhangrafan4480 5 лет назад +2

      @@JamesJoyce12 I don't really know what you are talking about. A theory is more than one point observation it is a set of relations between measurable quantities which have to be held up over a range of different measurements. Anyway the criterion of interest is falsification. If the the theory is proved FALSE on one occasion it is incorrect. Have you studied Karl Popper?

  • @liberalmonk839
    @liberalmonk839 2 года назад +4

    0:19 wow, a side-moon-walk! 🙂

  • @jfvanschalkwyk
    @jfvanschalkwyk 2 года назад

    Hello Sabine, I only discovered your channel today.. I like and enjoy your videos !

  • @41alone
    @41alone 3 года назад +30

    Some of her talks, like this one, direct my attention to the limits of my meager capacity to grasp existence and feel how lucky I am.

  • @non-inertialobserver946
    @non-inertialobserver946 5 лет назад +136

    The comment sections on these types of channels are a goldmine for cranks and crackpots lol

    • @josephjohnson3738
      @josephjohnson3738 5 лет назад +7

      But not you, of course. Lol!

    • @non-inertialobserver946
      @non-inertialobserver946 5 лет назад +46

      @@josephjohnson3738 Not me, because I realize how little I know and I am constantly studying to know more. I don't sit all day arguing why 'conventional' physics is wrong, and I don't claim to have found a theory of everything or whatever

    • @josephjohnson3738
      @josephjohnson3738 5 лет назад +7

      @@non-inertialobserver946 You are absorbing bullshit. That is my point of view. If you are soaking up the latest fantasies of modern physics, you are right where they want you. Following along with the clap trap that they feed to the public, so they can aquire billions of dollars and comfort their 40+ careers with a tremendous salary. That's ALL they care about in these days of corrupt science. Do you really think that there was a chance that the LHC would never find the higgs fantasy particle? Or the LIGO detection of gravity waves? If so, you are, like many or most, have NO understanding of human history of behavior. When viewed honestly, it's all crap. All humanistic drivers of behavior apply here. Don't fall for it!

    • @JohnDlugosz
      @JohnDlugosz 5 лет назад +33

      @@josephjohnson3738 Huge salaries? That's news to most working scientists.
      You're using a computer; you believe that our understanding that allows them to be built is correct, or is that all a hoax too and it's really magic or something? If you do accept that engineers have the correct model, where do you think the correctness would end and the hoax begin? Note that modern semiconductors, HDDs, optic fibers, etc. rely on quantum mechanics.

    • @TheGamingg33k
      @TheGamingg33k 5 лет назад +22

      @@josephjohnson3738 Thank you for your comment. Thanks to the physicists and engineers who use Quantum mechanics and the available physics to create something that can allow dumbasses like you to give a voice.

  • @madmanX1314
    @madmanX1314 5 лет назад +36

    I love the way she says „generelativity“

    • @kenelliott8944
      @kenelliott8944 4 года назад +2

      U goof ball !!!

    • @jarnovanderzee2469
      @jarnovanderzee2469 4 года назад +3

      @@kenelliott8944 WHATCHU JUST CALL ME U BITCH

    • @lk4543
      @lk4543 4 года назад +1

      @@jarnovanderzee2469 Bye felicitia

  • @Itwillgrowback
    @Itwillgrowback 2 года назад +1

    This is such an incredible channel

  • @jensphiliphohmann1876
    @jensphiliphohmann1876 5 лет назад +4

    I'm quite unhappy with the rubbersheet "model" as it's quite useful to visualize _potential_ (and not only gravitational but electric as well) but when it comes to the curvature of spacetime, it *doesn't even lead to the right direction* of understanding what GR means by spacetime being curved.
    First: The rubbersheet stands for space rather than spacetime because a heavy body symbolizes a heavy body sitting in one place.
    Second: A marble rolling along the sheet will follow what the "down" direction is just as a body in a gravitational field tends to the lower potential regions. If we bent the sheet upwards instead of downwards, the marble would roll _away_ from the center just as an equally charged particle would be repelled. It would *not* follow the sheet's _curvature_ anyway.
    *A much better model* for what GR means by curvature of spacetime is - Earth's surface. Let's compare lines along it to world lines, where great circles stand for geodesic world lines, i.e. world lines of inertial bodies.
    In a "flat" surface (including a cylinder's mantle which is bent but geometrically flat as well), parallel lines stay parallel, and so do parallel geodesic world lines in a space workout measurable gravity.
    Within a positively curved surface or spacetime, even geodesics parallel at some place tend to meet each other, just as the meridians (which are parallel at the equator) do at the poles.

  • @ffggddss
    @ffggddss 5 лет назад +5

    I already had in mind the singularity problem; thank you for the rest!
    I've seen it claimed that we don't need to reconcile GR with QM; that each one can be confined to its own region of applicability. I find such a position ludicrously untenable; at the very least, there are circumstances which require both to apply, and this approach would leave us utterly mute; without any way to predict the physical behavior in those circumstances.
    Fred

    • @kofola9145
      @kofola9145 5 лет назад

      It is ignorance in disguise of science. Indeed the application of relativity. Each thing can have its own truth. How can we tell truth from lies? Truth and lies are relative. If everything is relative, why bother doing anything.

    • @ffggddss
      @ffggddss 5 лет назад +2

      @@kofola9145 "Everything is relative" isn't Einstein's relativity, or any sort of science at all. It's a hippie sophist mantra, at best.
      Fred

    • @kofola9145
      @kofola9145 5 лет назад

      @@ffggddss Exactly. It is not science. It is a world view. Special theory of relativity. IF there is no gravity. Gravity is universal. It is not special. It is hocus pocus. Hypotheses non fingo. Special theory of relativity is based on "thought experiment" that in the truest sense of the world does not and cannot exists. There is not a single place in the universe where gravity does not exist. If gravity exists, we always have a point of reference we can use to decide whether it is your ship, my ship or the point of reference.
      But wait a second. What if we remove the gravity? According to the Special Theory of Relativity, we cannot decide whether it is your ship or my ship or the universe that what is in linear motion.
      Are you sure about that? Because I would say we can pretty easily decide what is going on. You fire the engines. Oh, but that is not what the theory is about. I do not care about "thought experiments". The only thing I care about is the reality. In the reality, you can fire engines of your ship and prove the engines move your ship, not my ship or the universe.
      The principle of relativity is a failure to understand the universe. Yes, in the end, it was Aristotle who was correct. Movement in absolute. There is only one frame of reference and we call it the Universe. Everything else like linear motion is ad hoc manipulation of reality you are supposed to explain. How can you explain reality if you manipulate the data? There is no relativity, there cannot be any theory of relativity. I mean, how can you say laws are absolute for everybody regardless and call it the principle of relativity? What? Seriously?
      Under no circumstances can we decide whether we are freefalling in gravity or accelerating at 10ms.
      Are you sure about that? All you have to do is to look out of the window. We can measure tidal forces. We can measure the different intensity of gravity. We can use a plumb bob. I am sorry, but just because you close your eyes, it does not mean the time is not flowing. You can call it a postulate if you want. But everybody else will correct you. Reality above all.
      Please, tell me I got it all wrong. Well, explain why I got it all wrong.

    • @ffggddss
      @ffggddss 5 лет назад +2

      ​@@kofola9145 Well, you got it largely wrong. There's just too much unravelling to do, to explain it all. I can't give a full-blown course in freshman physics here. But here are a few salient points.
      For one thing, the thought experiments you refer to, LED to the theory, but they are NOT the theory; they help explain the theory.
      Both special and general relativity (SR & GR) are very well tested in the real world. No thought experiments are required to state or test those theories.
      Did you know that the principle of relativity dates back to Galileo (1564 - 1642)? He describes sitting in the hold of a ship, and, being completely closed in, not being able to tell whether the ship is docked ("stationary") or sailing on a smooth sea at constant speed & direction. In short, there is no experiment with motions of things confined to that ship's hold, that can determine the ship's velocity - be it 0 or anything else.
      This means that physics "looks" the same - obeys the same laws - in any two frames of reference that are in constant-velocity motion with respect to each other.
      This is exactly the principle of relativity - NOT, "everything is relative." And it is in no way a denial of the universal applicability of the laws of physics.
      Galilean relativity is in fact a feature of the laws of motion later formulated (1666, pub. 1687) by Isaac Newton (1642 - 1726).
      It was actually Galileo who did numerous experiments with moving bodies, which established that, as Newton had it, "rectilinear motion," and not "rest," is the natural state of motion of things, all of which falsifies Aristotelian mechanics.
      [Note that it was Aristotle who used "thought experiments" to arrive at a flawed mechanics; and Galileo who actually consulted reality - experiments - to arrive at a correct mechanics!]
      One consequence of this, is that velocity is physically meaningless without specifying (or at least, implying) an inertial frame in which a thing has that velocity.
      As for deciding whether we are stationary on Earth's surface or accelerating at ≈10 m/s² in interstellar space, yes we can "look out the window" to tell that, but the point is, that (local) physics is the same in those two situations. Tidal forces (the spatial gradient of gravitational "forces"), and the varying intensity of gravity, are a feature of both Newtonian gravity and GR. They show up only over some extent of space & time; they are not strictly local; and they determine how bodies move through those regions of spacetime.
      I hope this helps clear some of this up.
      Fred

    • @kofola9145
      @kofola9145 5 лет назад

      ​@@ffggddss It is not about physics, it is about the nature of the universe.
      Yeah, that is only how it is explained to disbeliever. If a principle is wrong, so are theories derived from the principle. Again, gravity is universal, we always have a point of reference, we can always tell if it is the ship or the universe.
      And the ship=universe. Looking out of the window means looking out of the universe. Which is impossible as far as I know. Universe is the only frame of reference we are aware of. One frame of reference, one set of laws. Not relative, but absolute. As long as we live in this universe, the principle of relativity is irrelevant.
      So you call absolute laws relative and relative movement absolute? Rest=OKelvin. Everything is in motion. Yes, rest is an unnatural state of things. Anyway, that was not my argument. The argument was: the universe is the only frame of reference, therefore movement is absolute.
      Oh, so the postulate of the theory is: "We cannot tell the difference between the force of gravity and force of acceleration if we ignore means that can tell us the difference." Yes, now it makes sense, absolutely logical. And time stops when clocks run out of electricity.
      No, it did not, because you dodged my most if not all of my questions. . So it cleared something, but I am still not sure whether I am right or wrong. So... you know... it is relative.

  • @Newmoon19
    @Newmoon19 3 года назад +25

    Sir Einstein was so great that still his theories can't be replaced😁❤️🙏

    • @feynmanschwingere_mc2270
      @feynmanschwingere_mc2270 3 года назад +4

      This video is absolute nonsense. According to Fields Medal winner and the greatest living mathematical physicist, Ed Witten, somebody whose physics acumen far exceeds Sabinr Hossfelder, General Relativity is the ONLY theory ever invented - before or since - that can account for WHY gravity obeys an inverse square law. Newton's theory couldn't do that. This was a HUGE clue to actual geniuses like Dirac and Witten, not this clown Hossfelder, that General Relativity must be true. This aspect of General Relativity, which she CONVENIENTLY omits in this post-hoc riddled video, gives it universal credibility amongst REAL physicists even as we look for a Theory of Everything.
      General Relativity is 100% CORRECT for the observational scope we have. She might as well titled this video "How we Know Quantum Mechanics is Not Quite Right" seeing as there as just as many open, unsolved questions in Quantum Mechanics (if not more) than there are in General Relativity. And thus far not one single theory of quantum gravity has any scientific consensus unless you count String Theory.
      This has to be the worst video Sabine has ever made. 100% Click Bait Trash, it gives the impression that General Relativity has been falsified and it has NEVER BEEN FALSIFIED. Any problems with the theory are very abstract and non-empirical. I repeat, Quantum Mechanics has just as many problems, if not more, than General Relativity.

    • @Newmoon19
      @Newmoon19 3 года назад

      @@feynmanschwingere_mc2270 you are so free man

    • @williamandrewshermenegildo6886
      @williamandrewshermenegildo6886 3 года назад +1

      @@feynmanschwingere_mc2270 How can space bend or shrink? Only if it is a thing, but if it is a thing, then it is somewhere, there is a boundary between a thing and the place it occupies, the place that things occupy is called space, which shows that what the Theory of Relativity calls space is not space. If he is not a thing, then he cannot bend or shrink, for he has no properties or limits, he is simply Nothing. Space is not a thing, but the absence of things, and it is precisely because it is the absence that things can occupy it. Time is not a thing either, it is just a measure of the movement of things. The fact that there is gravity, an invisible thing that bends and shrinks doesn't prove it's space, it could very well be unknown matter (perhaps dark matter?).

    • @ultrainstinctgoku2509
      @ultrainstinctgoku2509 3 года назад

      How does gravity curve space and time... I mean spacetime? Also can spacematter curve spacetime? How about darkmatter? Can space-energy curve time-matter? Can time-matter curve space-energy, and can space-time curve time-energy? If the conscious mind is so curved, than why does a ruler appear so straight??? 🤔... Just kidding. Man science is cool. I like Albert Einstien, in his time, he was a decent, smart-guy. He also believed in Jesus of Nazareth, that's pretty cool of him. 😇

    • @epistemologicaldespair68
      @epistemologicaldespair68 2 года назад

      @@williamandrewshermenegildo6886 This may be the most vague comment here my friend. The fact you said "thing" 11 times muddies the water extremely, the way I try to visualize it is space is a superfluous field, not anything (in the literal sense) "particular' (having or being a particle). I don't think GR postulates that spacetime is an object the way you describe it at all. An objects mass acts as a perturbation in the field, I agree its very hard to grasp, we can hardly even discuss this without a PHD and even then, no one knows what spacetime really IS, we just know how it acts. I can dimly see your point here. However I could say light is not a "thing" but the absence of "dark things", but it doesn't get us any closer to understanding its functionality its just trickery of language , you have to run with what you have an build from there, and right now bent spacetime is the closest thing we have to understanding its function in the universe.

  • @rohitnijhawan5281
    @rohitnijhawan5281 Год назад +3

    Dear Sabine, can you please help us understand... in that picture where that electron "splits" to go through those 2 paths Right at mark ( 2:50 )... has its mass doubled from 2 identical electrons or has it halved so the total mass of the everything remains the same?
    Thanks

    • @indradityasarkar
      @indradityasarkar Год назад

      it doesnt really "split". it's more like we can't measure the splitting, and only know whats happening after checking.