20 Subatomic Stories: Is the Planck length really the smallest?

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  • čas přidán 10. 05. 2024
  • A reasonable question of physics is if there is a smallest possible size and shortest duration and some scientists have claimed that there is and they are called the Planck length and Planck time. In this episode of Subatomic Stories, Fermilab’s Dr. Don Lincoln explains the truth of the Planck constants. It’s not what you think.
    Don Lincoln article in Fermilab Today: “Planck length, minimal length”
    www.fnal.gov/pub/today/archiv...
    Alden Mead’s 1964 paper: “Possible Connection Between Gravitation and Fundamental Length” (subscription required)
    journals.aps.org/pr/pdf/10.11...
    Frank Wilczek’s paper on absolute units
    ctpweb.lns.mit.edu/physics_tod...
    Mead and Wilczek’s public conversation
    ctpweb.lns.mit.edu/physics_tod...
    Energy conservation in general relativity: John Baez
    math.ucr.edu/home/baez/physics...
    Energy conservation in general relativity: Sean Carroll
    www.preposterousuniverse.com/...
    Fermilab physics 101:
    www.fnal.gov/pub/science/part...
    Fermilab home page:
    fnal.gov
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Komentáře • 1K

  • @richtalk34
    @richtalk34 Před 3 lety +154

    Tip: always know your plank length before you go to the hardware store.

    • @the_hanged_clown
      @the_hanged_clown Před 3 lety +5

      is 6 inches a good planck length?

    • @mellowfellow6816
      @mellowfellow6816 Před 3 lety +8

      Measure twice, cut once

    • @the_hanged_clown
      @the_hanged_clown Před 3 lety +2

      @@mellowfellow6816 that's exactly what my parents thought too, but then they changed their minds when my brother was born

    • @TheOldBlackCrow
      @TheOldBlackCrow Před 3 lety +2

      I have a ruler that shows light distance... Got it through V Sauce Curiosity box.

    • @klausolekristiansen2960
      @klausolekristiansen2960 Před 3 lety +1

      czcams.com/video/_Y8HgmOoLCM/video.html

  • @duggydo
    @duggydo Před 3 lety +137

    Thanks for answering my question Dr. Lincoln. I appreciate the links to more info and will certainly read them!

    • @TelB
      @TelB Před 3 lety +1

      Yes, this was a great question and a superb reply. Really enjoyed this and I will check out the links too.

    • @goutamboppana961
      @goutamboppana961 Před 2 lety +1

      hello

  • @n1k0n_
    @n1k0n_ Před 3 lety +63

    " Planck time = zorblats " ...I need that tshirt

    • @RichardKMEvason
      @RichardKMEvason Před 3 lety +20

      12 zorblats! Come on man, be precise!

    • @karellen00
      @karellen00 Před 3 lety

      I wonder what civilization came out with zorblats units and how precise they have to be to measure 1/12 of Planck time. Or it may be the exact opposite, they are so underdeveloped that they use a 12 scale factor as some imperial units, and so they must not even know what they are doing!

    • @dlevi67
      @dlevi67 Před 3 lety +1

      @@karellen00 Perhaps they count in base 12, which to some extent would be simpler than base 10, if we were to start from scratch?
      Or perhaps they name powers of their whatever base (let's say 10) in multiples of 5, and have 10 of them, so rather than having milli/micro/nano etc. they have 10^-5 = "kan", 10^-10 = "lub", ... ,10^-45 = "zor", and a "blat" is 4.5 seconds?

    • @justpaulo
      @justpaulo Před 3 lety

      @@RichardKMEvason zorTblats!

    • @jackmack1061
      @jackmack1061 Před 3 lety

      12. 12 Zzorblats to the plank. Gotta be 12. Maybe even more.

  • @terryboyer1342
    @terryboyer1342 Před 3 lety +135

    I still haven't decided what I think about the uncertainty principle.

    • @fdsfds7339
      @fdsfds7339 Před 3 lety +4

      Simple yet elegant. Well done

    • @99.99
      @99.99 Před 3 lety +2

      😆

    • @joba1560
      @joba1560 Před 3 lety +5

      Don't put too much energy in it or you might not get away

    • @JeffDG
      @JeffDG Před 3 lety +7

      You must be too sure about something else.

    • @SaposJoint
      @SaposJoint Před 3 lety +1

      Brilliant. Good job there.

  • @iammichaeldavis
    @iammichaeldavis Před 3 lety +30

    It truly warms my heart to see Fermilab’s CZcams channel doing so well 🥰 it gives me hope for the future

    • @fellon8019
      @fellon8019 Před 2 lety +1

      I weep for the future

    • @thevikingwarrior
      @thevikingwarrior Před 4 měsíci

      I am glad that there is so many people that like technical stuff like this!

  • @scottmuck
    @scottmuck Před 3 lety +51

    I will henceforth quote my age in Zortblats

  • @aberone_library
    @aberone_library Před 3 lety +43

    A wonderful episode of Subatomic Stories. I learned so much new about our world! Thank you very much for this series Don Lincoln!

  • @stevedixon9734
    @stevedixon9734 Před 3 lety +42

    Thank you, Don. The planck length being the length where our math breaks down answers questions and misconceptions I’ve had for years.

    • @dlevi67
      @dlevi67 Před 3 lety +3

      It's not the maths - it's the physics. The quantum of action represented by Planck's constant gets us "to those values"; going further (or smaller/shorter/more energetic) is not just a question of maths (though it will probably require a different mathematical approach from current ones).

    • @dlevi67
      @dlevi67 Před 3 lety +1

      @Brandon Piperjack I'm not sure what you mean - energy measured at a given length? It is true that (for example) the Bekenstein bound is expressed in terms of (amongst other things) Planck's constant and it is related to the entropic content of black holes, and it is true that by combining (in various ways) Planck units you can get to the same limit conditions that would give rise to a Schwarzschild black hole.
      However, the point I was trying to make is that it's not the mathematical structure that breaks down (unlike for example in calculating "curvature of space-time in a black hole singularity" under GR); it's the actual physical interpretation of the numbers that no longer makes sense: QM formulated in terms of Planck's constant describes nonsense "beyond the Planck units" because what it describes contradicts the (physical) assumptions on which the theory itself is based.

    • @dlevi67
      @dlevi67 Před 3 lety +1

      @Brandon Piperjack Nothing to forgive!
      This may be interesting to read: en.wikipedia.org/wiki/Planck_particle (and the linked article on the "Black Hole Electron"). And this: physics.stackexchange.com/questions/273888/can-a-photon-have-a-wavelength-less-than-the-planck-length/273902

    • @bsadewitz
      @bsadewitz Před 3 lety

      @@dlevi67 Does it make sense to say that it is the shortest possible length, then, if we don't have a theory that accounts for anything shorter?
      I'm not trying to be pedantic. It's just a philosophical question that arose while I was wondering how it is that I have heard physicists say this.

    • @dlevi67
      @dlevi67 Před 3 lety

      @@bsadewitz No, you are not being pedantic at all - the 'problem' is a very interesting one, actually: the theory breaks down at the Planck length - as such, it's the shortest meaningful length (or better, distance) that the theory (QM + SR) can describe for particles with mass/energy.
      We don't have a better theory, but neither do we have a reason to think that space(-time) is quantised at the Planck length (i.e. there is a physical meaning to it). This is partly because some of the other Planck units (e.g. mass) do not seem to represent a meaningful 'limit', and partly because there is some evidence that space is _not_ quantised. You may also find the discussion here interesting: physics.stackexchange.com/questions/185939/is-the-planck-length-the-smallest-length-that-exists-in-the-universe-or-is-it-th

  • @markkaidy8741
    @markkaidy8741 Před 3 lety +7

    My compliments to you for linking to papers that go into subject matter more in depth! This is needed for those that wish to understand concepts bwyond the cursory .Please continue in future videos.

  • @Hossak
    @Hossak Před 3 lety +4

    My goodness me - was this one of the best videos yet or what? Thank you so much Don - this scratched so many itches and answered so many questions that were lingering in my mind it is not funny. Thank you for making my week!!!!

  • @crouchingtigerhiddenadam1352

    I've followed the channel for years and this is my favourite Fermilab video. Until now I thought the Higgs Boson going to Church was unbeatable.
    Thank you Dr. Lincoln!

    • @drdon5205
      @drdon5205 Před 3 lety +1

      Where did the Time Crystal one fit in? That was at least funny.

    • @johnm.v709
      @johnm.v709 Před 3 lety

      @@drdon5205
      Watch only if hav'nt earlier.
      czcams.com/video/nnkvoIHztPw/video.html

    • @johnm.v709
      @johnm.v709 Před 3 lety +1

      How about ....
      czcams.com/video/nnkvoIHztPw/video.html

    • @ThomasJr
      @ThomasJr Před 2 lety

      If Einstein's GR only works in the macro world, how do we know microscopic black holes exist?
      One of the alleged difficulties of producing a so-called quantum gravity theory is due to the Heisenberg's uncertainty principle.
      To probe ever tinier distances, we need ever greater energies. The problem is that if you concentrate too much mass in a tiny space, the gravity of such a space becomes so huge that black holes form, making the measurement impossible.
      This is my question. How do we know that a huge energy allocated to a tiny subatomic region of space would create a black hole, since there is no quantum gravity theory to go by?
      How do scientists know, what are they basing this idea on, to say that a huge subatomic concentration of energy would lead to a microscopic black hole?

  • @ardijan706
    @ardijan706 Před 3 lety +17

    Yay, new vid from Dr. Don! 💖🌌

  • @KafshakTashtak
    @KafshakTashtak Před 3 lety +8

    Shout out to Dr Lincoln for showing us his childhood photos.

  • @StumpyMason_
    @StumpyMason_ Před 3 lety +9

    Between Subatomic Stories and Sean Carrolls videos I expect my PHD in Physics to arrive by the end of the year! Thank you!

    • @johnm.v709
      @johnm.v709 Před 3 lety +1

      If it helps
      Spin of Indivisible Particle : Watch...
      czcams.com/video/nnkvoIHztPw/video.html

  • @michaelglynn2638
    @michaelglynn2638 Před 3 lety +1

    That was fascinating, and I'm really looking forward to the next new chapter. Thank you.

  • @constpegasus
    @constpegasus Před 3 lety +1

    How can you not love these videos. Thank you Mr. Lincoln.

  • @KarlFarbman
    @KarlFarbman Před 3 lety +12

    I've said it before and I'll say it again: I absolutely LOVE this video series.

  • @peterking2886
    @peterking2886 Před 3 lety +7

    I understood about 1 zorblat of this talk but still find it interesting .

  • @nmagko
    @nmagko Před 3 lety

    Thanks Dr. Lincoln. This episode was very instructive.
    This series are good for learning in the simplest way possible.

  • @thomascasey8171
    @thomascasey8171 Před 3 lety

    This is a great channel, the questions from the viewers are also awesome. Recently subscribed.

  • @neoqueto
    @neoqueto Před 3 lety +3

    Wow good no-fluff explanations without any sensationalism yet the man makes it interesting, entertaining and easy to digest. Never knew the real story behind the Planck units until now.

  • @LeoStaley
    @LeoStaley Před 3 lety +77

    Don: astrophysicists aren't funny.
    Matt of Pbs Spacetime: 🙄

    • @loganwolv3393
      @loganwolv3393 Před 3 lety +10

      Well he might be sorta funny must mostly he's dead serious,his voice,his face,everything.

    • @mauritz3912
      @mauritz3912 Před 3 lety +14

      @@loganwolv3393 Someone is not getting all the jokes :P

    • @stevierv22
      @stevierv22 Před 3 lety +4

      Or Dr. Becky

    • @LeoStaley
      @LeoStaley Před 3 lety +11

      @@loganwolv3393 he has a very dry sense of humor, but I get a good lol once or twice per episode.

    • @loganwolv3393
      @loganwolv3393 Před 3 lety

      @@LeoStaley So easy to miss and hard to appriciate huh? i see.

  • @altheaunertl
    @altheaunertl Před 3 lety +1

    I just discovered your channel and subscribed! I'm excited for your upcoming videos.

  • @theultrapixel
    @theultrapixel Před 3 lety

    Hi Don! I hope that you understand that I learn something new and fascinating every episode. Thanks you so much!

  • @michaelblacktree
    @michaelblacktree Před 3 lety +3

    Thanks for the history lesson! 👍

  • @ichingiching
    @ichingiching Před 3 lety +4

    Just great. Thank you.

  • @esperancaemisterio
    @esperancaemisterio Před 3 lety

    Awesome video Don! Thanks a lot for sharing! You have a great sense of humor! It's very fun to watch your videos!

  • @indream6318
    @indream6318 Před 3 lety

    This channel is GREAT! As a casual, trying to figure out reality this sort of info is a great roadmap for me. Thank you!

  • @SimonClarkstone
    @SimonClarkstone Před 3 lety +26

    Regarding iron and fusion: theoretically we could add lots more neutrons to let nuclei hold together despite having lots of protons, but there seems to be a rule that you can't have more than about 1.5 times as many neutrons as protons before beta decay starts occuring. How is it that protons stabilise neutrons over a wide variety of nucleus sizes but neutrons aren't able to stabilise each other (you don't get stable n4 or anything)?

    • @ozzymandius666
      @ozzymandius666 Před 3 lety +3

      Because neutrons are both unstable and more massive than protons. If there exists a lower energy state for the collection of nucleons, then it will decay into that lower energy state, if a decay path exists. Still, I do wonder why no-one has ever studied or even made n2, even if it is short lived.

    • @MuttFitness
      @MuttFitness Před 3 lety +10

      Dineutron (2 neutrons) was observed 8 years ago. So it's not completely unstudied.

    • @ozzymandius666
      @ozzymandius666 Před 3 lety +1

      @@MuttFitness Fascinating. I'll have to look into it! Thanks!

    • @armagetronfasttrack9808
      @armagetronfasttrack9808 Před 3 lety +7

      Neither protons nor neutrons truly "stabilize" each other; instead, atomic nuclei will fill out their protons and neutrons so that, roughly, the highest energy proton and highest energy neutron will have the same energy in the nucleus. This is because the energy levels in general become more spread out as you add more nucleons, so if you had a very energetic proton or neutron relative to the other "stack" of nucleons, it would be more energetically favorable for that very energetic proton/neutron to beta decay into the shorter stack. You should think of them as two different stacks of energy levels because they are not identical particles so the Pauli exclusion principle doesn't apply between them.
      The reason that nuclei tend to fill with a ratio of about 1.5 neutrons per protons is because the proton energy levels are more spaced out due to electrostatic repulsion (since protons are charged). So, roughly speaking, in a given amount of energy, you can fit 3 neutrons per every 2 protons.

    • @betaneptune
      @betaneptune Před 3 lety +1

      The nuclear force is attractive between protons and neutrons, but is slightly repulsive between likes. And protons do not stabilize nuclei. For any given element there are between zero and a few stable isotopes. (Zero for Z > 82, i.e., those elements beyond lead, no isotopes are stable.) For those isotopes with fewer neutrons than the stable ones, the protons tend to beta decay. For those isotopes with more neutrons than the stable ones, the neutrons tend to beta decay. Both processes bring the given nucleus closer to a stable isotope. Makes sense.

  • @Robert_McGarry_Poems
    @Robert_McGarry_Poems Před 3 lety +3

    Lucky for me, I watched Sean Carol's video about exactly that!

    • @Robert_McGarry_Poems
      @Robert_McGarry_Poems Před 3 lety

      Let's see, something like if the space is expanding faster than a particle can move through it, that particle will actually lose energy to the expansion. Photons red shift, electrons slow down.

    • @ThomasJr
      @ThomasJr Před 2 lety

      If Einstein's GR only works in the macro world, how do we know microscopic black holes exist?
      One of the alleged difficulties of producing a so-called quantum gravity theory is due to the Heisenberg's uncertainty principle.
      To probe ever tinier distances, we need ever greater energies. The problem is that if you concentrate too much mass in a tiny space, the gravity of such a space becomes so huge that black holes form, making the measurement impossible.
      This is my question. How do we know that a huge energy allocated to a tiny subatomic region of space would create a black hole, since there is no quantum gravity theory to go by?
      How do scientists know, what are they basing this idea on, to say that a huge subatomic concentration of energy would lead to a microscopic black hole?

  • @colbynye5995
    @colbynye5995 Před 3 lety +1

    As always, great video! Thank you!

  • @justayoutuber1906
    @justayoutuber1906 Před 2 lety +1

    Thank you for explaining the Plank length issue...it took 5 videos but your finally was clear enough to understand.

  • @eckligt
    @eckligt Před 3 lety +8

    This is further to the question and answer regarding fusion and iron. Turning to fission, for instance in current nuclear power reactors, would it be correct to think the energy we derive is actually stored as potential electrostatic energy inside the nucleus? And that the role of the strong nuclear force in fission is really as a kind of "latch" that keeps that electrostatic energy bound up until it's eventuallly released, either spontaneously or through neutron bombardment?
    Furthermore, for fusion of lighter elements, is it correct to think that the energy we get out is fundamentally from the strong nuclear force, as two light nuclei moving around already have quite a lot of potential energy in the strong nuclear field between them -- or is the strong nuclear force so different that we can't even talk about strong nuclear potential?

    • @Dragrath1
      @Dragrath1 Před 3 lety +2

      That seems largely accurate as a heuristic at least baring a few additional complexities for example as atoms get larger the odds that a number of nucleons, typically Helium 4 for some reason perhaps as it is both a local minimum and acts as a boson which means the Pauli exclusion principal need not apply?, will be able to quantum tunnel out of a nucleus. Note the distinction typically as other nuclear atomic configurations can tunnel out of a nucleus it is just orders of magnitude less likely to happen. Probabilistically this effect ignores energy barriers so you need to think of the latch as somewhat "leaky" due to the whole quantum tunneling effect
      But yes you can think of the energy difference between the reactants and the products as getting released or absorbed for the reaction to take place and those energy sources are generally based on whether the strong nuclear force or electromagnetic force is dominant.

    • @Haplo-san
      @Haplo-san Před 3 lety +1

      And further I'm adding with this; stars tends to fusion elements that lighter than iron, up to iron; and there is no more energy left to generate with fusion so we require more energy to create heavier elements. But heavier radioactive elements eventually decays into lead and stops there. Shouldn't it decay more keep giving energy untill it hits to iron again? I thought subatomic particles are lazy and they all tend to stay on lower possible hikikomori energy just like me.

    • @eckligt
      @eckligt Před 3 lety +1

      @@Haplo-san I think I can answer that, although not at the deepest level. There are many nuclei that are stable even though they don't have the minimum energy like that of iron. This really goes for most of the stuff you see around you, stable oxygen (lighter than iron), stable gold (heavier than iron). They all have energy, but we don't observe that this energy likes to come out on its own.
      I hope you are familiar with the nuclide chart, with numbers of protons on one axis and numbers of neutrons on the other axis. There is a squiggly line going roughly diagonally that represents stable combinations of protons and neutrons. Typically there's only one or a few stable isotopes for each chemical element (proton count). You can imagine the nuclide chart also in 3D, where each cell stands as a column, protruding out from the chart with a height indicating how much energy is bound up in the nucleus represented by that cell. Then you'll see a kind of "valley", with the line of stability going down the middle. The sides of this valley can be quite steep, but the valley itself also goes gently uphill as you move towards the heavier nuclei. It also goes uphill towards the lighter elements, where it becomes very steep. In a real valley, a boulder can tumble down towards the lowest point, but often they'll get stuck in some impediment along the way, a local minimum. Equivalently, in the nuclide chart, an unstable heavy nucleus can undergo the various decay modes, moving it to a lower energy state, but the decay chain will typically get stuck in a local minimum.
      We can make a nucleus unstable by bombarding the material with neutrons and hoping that you get a "direct hit". In some situations, like with Thorium, that can nudge the nucleus into another cell in the chart where the energy bound up in the nucleus becomes more easily accessible, hence the interest in Thorium for energy. (Here I'm ignoring that Thorium is very slightly radioactive, for most practical purposes it's stable.) To spell it out, we are adding a small amount of energy to lift the nucleus out of the local minimum, so it can follow another decay path that may move it closer to the global minimum around iron. In the analogy, this is equivalent to lifting a boulder out of a small trench in order to let it continue tumbling down a valley.
      Disclaimer: I am not a physicist, and may be wrong.

    • @Haplo-san
      @Haplo-san Před 3 lety

      @@eckligt That was informative, thank you. I imagined something like China's rice terraces. If an atom sitting at higher terrace, you may need a neutrons kick of energy to throw it lower terrace but when it reaches ground level, you will require i-don't-know-how-the-f-loads of energy to dig it more into lighter elements. I also imagined splitting a toothpick into two pieces is easier but keep splitting it more into two pieces becomes a pain very quickly. I was seen this chart before but I wasn't familiar with it, so I will dig more into nuclide chart, it looks interresting. Thanks again.

    • @eckligt
      @eckligt Před 3 lety +1

      @@Haplo-san I recommend this video from a French research institute that explains this better than anything else I have come across: czcams.com/video/UTOp_2ZVZmM/video.html
      Note that you may struggle with their highly accented English.

  • @PitchWheel
    @PitchWheel Před 3 lety +6

    Good video as usual, thanks so much. But... Could the Planck length be actually *smaller* than the real minimum physical size, if this should happen to be quantized? Thank you

    • @BothHands1
      @BothHands1 Před 3 lety

      good question

    • @johnm.v709
      @johnm.v709 Před 3 lety

      Min. Physical.....
      czcams.com/video/nnkvoIHztPw/video.html

  • @lunchmind
    @lunchmind Před 3 lety

    THank you for clarifying the meaning and essence of Planck's Constant for me, DR. Lincoln. Yes, I until now, had always thought it was the shortest length, or at least the shortest measurable length. Your explanation makes more sense and is more fascinating to me.

  • @sundaralingams8083
    @sundaralingams8083 Před 3 lety

    You are the best science educator for physics in CZcams as of now !

  • @grahamrankin4725
    @grahamrankin4725 Před 3 lety +3

    How can we get some of the great t-shirts you wear?

  • @benjaminshropshire2900
    @benjaminshropshire2900 Před 3 lety +6

    An interesting bit (Ignoring the ways the current models could break down):
    - A Planck mass Schwarzschild black hole would be a Planck length across.
    - A Planck energy photon would have a wavelength of a Planck length.
    - A Planck energy is equivalent to a Planck mass (via E=mc²).
    Naively, a photon of that wavelength should, by it self, be a kugelblitz: a black hole formed only from radiation. (Though I suspect that breaks down when you start asking about what reference frame you are measuring from, but it's still fun.)

  • @darrenclift6704
    @darrenclift6704 Před 3 lety

    your shows are the best, love how you explain things tha twork. you should do a live show some time so people can ask you questions directly. thank you for the show.

  • @StephenJohnson-jb7xe
    @StephenJohnson-jb7xe Před 3 lety +1

    Thank you for this video, after years of me trying to understand Quantum physics and either reading or seeing people talk in absolutes which prickled my mind into more questions than I started out with I can now see that those absolutes were not absolute at all but merely interpretations or extrapolations of what was known. Put more clearly I would read, "this is true therefore this must exist because (complicated mathematics I cannot fully understand)" which did not make sense to me. Persistence has paid off, thanks to people like you, Arvin Ash, PBS Space Time and others I am beginning to see a clearer picture.

  • @mellowfellow6816
    @mellowfellow6816 Před 3 lety +9

    "So, what is it with astrophysicists?" Badum tish!

  • @rollinwithunclepete824
    @rollinwithunclepete824 Před 3 lety +8

    What?! Dr Don, you haven't always had a mustache?

    • @drdon5205
      @drdon5205 Před 3 lety +1

      My mom made me shave it when I was a baby.

  • @TelB
    @TelB Před 3 lety

    You are an amazing educator. Thank you so much for bringing all this amazing wondrous content and presenting it in a way that I can understand at least some of it! Lol! I wondered if there might be a chance to cover ‘Wigner’s Friend’ please and any more recent developments on this? Once again, Thank you hugely!

  • @sreeshakv5405
    @sreeshakv5405 Před 3 lety +2

    You are great scholar and teacher sir. I wish and pray God that people like you to be in all education institution to teach science.

  • @piotrjuszczyk1
    @piotrjuszczyk1 Před 3 lety +3

    If we send one of the Quantum entanglement particle to Black Hole they are still entaglement?

    • @divyanshvishwkarma9548
      @divyanshvishwkarma9548 Před 3 lety

      Well, I am fellow teen little to answer, But I can say entangled particles cohere as they interact with environment, and even measurements

    • @piotrjuszczyk1
      @piotrjuszczyk1 Před 3 lety

      @@divyanshvishwkarma9548 And my english is to weak to write this good but I think that entanglement is above time and space. And even event horizon is no barrier for this.

    • @divyanshvishwkarma9548
      @divyanshvishwkarma9548 Před 3 lety

      Conditions under the event horizons changes a lot, for instance Space and Time swapping their role (or properties to say)
      And any event that occurs under event horizon doesn't have any effect on an outside observer,
      And I am not a physicist now but can say that the monster will either break the entangled, or if it didn't, only a clever experimental physicist can find it😁😁

    • @piotrjuszczyk1
      @piotrjuszczyk1 Před 3 lety

      @@divyanshvishwkarma9548 That I wrote: "entanglement is above time and space"

  • @rwood1995
    @rwood1995 Před 3 lety +10

    Cannot believe you actually got out “astrophysicist are known to be dull and not funny “ without Neil deGrass Tyson cutting you off and telling his side instead!!! Lol

    • @shawnchong5196
      @shawnchong5196 Před 3 lety +2

      neil deGrass Tyson is annoying. Anyone who likes doing TED videos is a tool.

    • @ThelemicMagick
      @ThelemicMagick Před 3 lety

      "... I know you didn't ask me, but..." ;)
      I really appreciate what Neil deGrasse Tyson does and did for the public awareness of science, though I do think he took it a bit too far. His podcasts with Chuck Nice are some of the unfunniest things I've ever seen.
      I'd love to see more in-depth videos from him, which are lacking lately. When he's able to put his ego aside, he's a great communicator.

    • @shawnchong5196
      @shawnchong5196 Před 3 lety

      @@ThelemicMagick true, what you said I agree. I can't stand watching Neil, nothing I saw I liked, but its what appeals to the masses is most important.
      Its like donald trump for conservatives/racists/2nd amendment gun toters.
      Same goes with left leaning liberal idiots/sjw dimwits/snowflakes.
      Of course its not this serious, etx, but the idea is the same, the underlying truth about society, and the mass population is the same: fickle like anything, band wagon jumpers. I wish we had good leaders, moral leaders, and role models. I'd vote Dr. Lincoln as one.

  • @BobtheTraveler-WD8NVN
    @BobtheTraveler-WD8NVN Před 3 lety +1

    Excellent Video, Don !!

  • @sreeshakv5405
    @sreeshakv5405 Před 3 lety

    Thanks for the knowledge sir. I have learnt many from you..

  • @dr.feelicks2051
    @dr.feelicks2051 Před 3 lety +8

    Why is Brian May a disciple of Kansas? He made a study of Dust in the wind.

    • @skatepark1ful
      @skatepark1ful Před 3 lety +1

      Howdy. Agreed and very funny! I looked at his Paper and am amazed! To say or type anymore will REVEAL my idioticy. Thanks for helping me laugh! Cheers

    • @dr.feelicks2051
      @dr.feelicks2051 Před 3 lety +1

      VINCE BERNAL CZcams done right, glad for giggles

    • @johnm.v709
      @johnm.v709 Před 3 lety

      Spin of Indivisible Particle : Watch...
      czcams.com/video/nnkvoIHztPw/video.html

  • @aldamaro5960
    @aldamaro5960 Před 3 lety +3

    Hi, great video. Has anyone suggested the dark photons as candidates for the hidden variables proposed by Eisten to overcome quantum mechanic uncertainty?

  • @folkertjanhoogstra820
    @folkertjanhoogstra820 Před 3 lety +1

    Great video. Helped a lot. Thank you

  • @williamprior7831
    @williamprior7831 Před 3 lety +1

    Dr don you are exactly what I needed

  • @SquirrelASMR
    @SquirrelASMR Před 3 lety +8

    Lmao standup comedy as part of your PhD 😂

    • @salec7592
      @salec7592 Před 3 lety

      PhD thesis defense. It is a thing.

  • @hinkles73
    @hinkles73 Před 3 lety +26

    Him: It's been said that the Planck length is the smallest length, but that's not the entire tale, as I will tell you in this week's episode of sub, sub, Subatomic Stories.
    Me: Good one, Don!

  • @albirtarsha5370
    @albirtarsha5370 Před 3 lety

    I like that Dr. Lincoln draws a clear distinction between the known and the speculative.

  • @chrisstargazer5866
    @chrisstargazer5866 Před 3 lety

    Your sense of humor is top notch😂😂👍👍

  • @pridefulobserver3807
    @pridefulobserver3807 Před 3 lety +6

    scientists: "Energy is not conserved"
    Me: I been lied to my whole life...
    Seriously, down with normal "education" and the established media, we all need to get our info from the SAUCE

    • @drdca8263
      @drdca8263 Před 3 lety +2

      It still holds well enough in contexts where general relativity doesn’t have to be taken into account. It is still very useful.

    • @juzoli
      @juzoli Před 3 lety +1

      joaquin vega Conservation of energy is still the best rule to follow for nearly every phenomena you can see in your everyday life. Especially if an investor aproaches you with his idea about infinite free energy...

    • @ozzymandius666
      @ozzymandius666 Před 3 lety +1

      If ya wanna run cool, you've got to run on heavy fuel! In other words: ya want the truth? Do the math.

    • @michaelsommers2356
      @michaelsommers2356 Před 3 lety +1

      Sure. Everyone should be taught general relativity in first grade. The fact that the kids can't even add yet shouldn't stop them from solving the Einstein field equations.

    • @ozzymandius666
      @ozzymandius666 Před 3 lety

      @@michaelsommers2356 Such fatalism. I've taught 10 year old kids the basics of differential calculus, and I'm nothing but a drunk. Starting from a number line, the x-y plane, linear equations, quadratic equations, and then...bam!...the derivative. Took me 5 hours. That was a class of two, tho.

  • @justpaulo
    @justpaulo Před 3 lety +14

    Dr. Don Lincoln: astrophysicists aren't funny.
    Neil deGrasse Tyson: hold my beer.

    • @rykehuss3435
      @rykehuss3435 Před 3 lety +4

      He isnt an astrophysicist. When was the last time he did any real science? decades ago. For the most part his contributions are posting self-important tweets.

    • @shawnchong5196
      @shawnchong5196 Před 3 lety +1

      @@rykehuss3435 Agreed, Neil deGrass Tyson is annoying. Anyone who likes doing TED videos is a tool.

    • @ThomasJr
      @ThomasJr Před 2 lety

      If Einstein's GR only works in the macro world, how do we know microscopic black holes exist?
      One of the alleged difficulties of producing a so-called quantum gravity theory is due to the Heisenberg's uncertainty principle.
      To probe ever tinier distances, we need ever greater energies. The problem is that if you concentrate too much mass in a tiny space, the gravity of such a space becomes so huge that black holes form, making the measurement impossible.
      This is my question. How do we know that a huge energy allocated to a tiny subatomic region of space would create a black hole, since there is no quantum gravity theory to go by?
      How do scientists know, what are they basing this idea on, to say that a huge subatomic concentration of energy would lead to a microscopic black hole?

    • @ThomasJr
      @ThomasJr Před 2 lety

      @@rykehuss3435 Tyson is hawt,but Not a real scientist

  • @ifrsmasterclass
    @ifrsmasterclass Před 3 lety

    Thanks for the explanation

  • @pepe6666
    @pepe6666 Před 2 lety +1

    man id love to see a crossover between fermilab & pbs spacetime. this was a cool episode by the way. got me thinking about the planck length.

  • @srinivasanmadusampathkumar6671

    I always enjoy your CZcams lectures. Have you done anything on the important physics constants ?

  • @fosterlewis7360
    @fosterlewis7360 Před 3 lety

    Just fantastic. Thank you very much.

  • @faruqhsj
    @faruqhsj Před rokem

    Dear friend in Physics of the Universe!
    I am enlightened by your illustrative videos and FermiLab's (USA's) Scientific contributions to the Humanity 💐❣️🙏
    Absolutely thank you so much and the whole staff of the FermiLab, USA.
    You are all great support to all the Human beings in all countries/ nations of the world 🌎🤗🌍🌄

  • @rickfox4068
    @rickfox4068 Před 2 lety

    Your reading choices on the left side (behind you) are very interesting.

  • @tresajessygeorge210
    @tresajessygeorge210 Před 2 lety

    THANK YOU PROFESSOR LINCOLN...!!!

  • @Petrov3434
    @Petrov3434 Před 3 lety

    A big fan of your effort -- THANK YOU !!
    Your lectures are numbered and apparently grouped (current one is in Subatomic Stories. Are there simple links so that one can easily find them? Many thanks in advance

  • @WhatAreDrums729
    @WhatAreDrums729 Před 3 lety

    I have never seen someone speak with so much passion about tachyons

  • @eniocs1428
    @eniocs1428 Před 3 lety +1

    Hi Dr. Lincoln! What do you think about super symmetry? Would love if you could do an episode about it! Greetings from Perú!

  • @shaungahan5227
    @shaungahan5227 Před 3 lety

    Thank you, Don.

  • @benjystrauss2524
    @benjystrauss2524 Před 3 lety +2

    Thank you, I've noticed that this misconception is often floating around. Are there any ideas for how we could measure things at smaller scales? (I have a hypothesis that what we think of as point particles may be solid objects with diameters far shorter than the planck length)

  • @johns9556
    @johns9556 Před 3 lety

    That before and after pic of Planck's contribution to QM had me rolling!

  • @alexjaybrady
    @alexjaybrady Před rokem

    Wonderful video as usual. I sometimes forget the human drama behind the story of physics, both are fascinating

  • @EddySunMusicProbe
    @EddySunMusicProbe Před 3 lety

    Thanks Don for another illuminating video! Cheers, Eddy. (ps will think about a question soon.. maybe..)

  • @USDAselect
    @USDAselect Před 3 lety

    1:04 Prof Lincoln you're the best.

  • @AkiraBergman
    @AkiraBergman Před 3 lety

    Dr. Don, you were a bit shaken last time, but I am glad you got your composure back.

  • @philshorten3221
    @philshorten3221 Před 3 lety

    Great video! Just wondering if Quantized Inertia is going to be the subject of one of your upcoming videos?

  • @TheOldBlackCrow
    @TheOldBlackCrow Před 3 lety

    Just bought two of your audiobooks... Looking forward to those!
    Question: in the accretion disc of a black hole, is there enough density and energy to fuse elements near or past 103 on the periodic table?
    Thanks!

    • @drdon5205
      @drdon5205 Před 3 lety +1

      I don't know, but I doubt it. I think the density is the problem.

  • @ThomasJr
    @ThomasJr Před 2 lety +1

    Wow, so this really deserved a much more compelling title, like, MISCONCEPTIONS ABOUT PHYSICS.

  • @edinfific2576
    @edinfific2576 Před 2 lety

    I have always, since my early childhood, asked questions about the world around me, always wondered about everything, and almost always thinking about everything I could.
    I brainstorm about things much more than most people, yet these scientists from decades and even centuries ago simply shock and amaze me with their insight, intelligence and the ability to come up with these superb solutions.
    Though I can understand almost everything, I currently can't fully comprehend how these scientists were able to develop these theories and formulas.
    It forces me to humbly admit that there are levels of intelligence beyond my grasp, gifted to very few people in the world.

  • @brotherstech3901
    @brotherstech3901 Před 3 lety

    Thank you sir . Your work is always great . Love from India 🇮🇳

  • @nileshgaidhani6820
    @nileshgaidhani6820 Před 3 lety

    Hello Sir, Loved your videos.
    Que: Is accretion disk a disk really (2 dimensional as seen from large distance )???? just like saturn rings or its just a visualisation....

  • @paulfrancis8836
    @paulfrancis8836 Před 3 lety

    Hi Doc, good video.

  • @variancytphul
    @variancytphul Před 3 lety

    Talking about iron being the final element that provides energy you said the most protons in a nucleus is expected to be 120. I was reminded of the island of stability. Could you explain what this is and why this may exist? Thank you!

  • @bloodyorphan
    @bloodyorphan Před 2 lety +1

    Also, regarding your comments on energy conservation, if you consider a photon is just an spacial aperture to a big bang temperature and expanding space changes the wavelength of that expression, it is easy to understand that the core energy of the photon has not changed, only the spacial apertures' behaviour of collapse has changed.
    B-)

  • @naveenjames7
    @naveenjames7 Před 3 lety

    Thanks Don, for answering my query. Indeed you have a great sense of humor and it would have been great to see you in the Big Bang Theory series.

  • @XuryFromCanada
    @XuryFromCanada Před 3 lety +1

    Speaking of black hole secrets.. is it possible to send out a message from inside the event horizon via gravitational waves? For instance, if two black holes are orbiting each other closely, they would form a single event horizon but you can maybe modulate frequency/amplitude of the gravitational waves and thus send a message out?

  • @nias2631
    @nias2631 Před 3 lety

    Awesome vid!!!

  • @andrewpaton3618
    @andrewpaton3618 Před 3 lety

    Hi thanks for the great series.What is your opinion on plasma cosmology as it seems to explain many things that gravity cosmology Can't such as binary star formation?

    • @ozzymandius666
      @ozzymandius666 Před 3 lety

      My opinion is that its pure bunk. Gravity cosmology can explain binary stars.

  • @NeonsStyleHD
    @NeonsStyleHD Před 3 lety +1

    Can you make a video talking about The results from the T2K Tokai Neutrino experiment in Japan recently and it's impact on the matter antimatter imbalance?

  • @owlthemolfar4690
    @owlthemolfar4690 Před 3 lety

    Hello Dr. Lincoln and team! Thank you for another awesome and informative video.
    Slightly off topic question: is it worth for someone after 30 years even to try to go to university to get degree in any science discipline.
    P.S. Then I was younger I do not think I choose right thing I really want and enjoy to do.

    • @drdon5205
      @drdon5205 Před 3 lety

      Tough call. It's always worth doing what you enjoy. But you will not have enough time to establish you professionally. That takes some 30 years or thereabouts.

    • @owlthemolfar4690
      @owlthemolfar4690 Před 3 lety

      @@drdon5205 Thank you for the answer.

  • @protoword10
    @protoword10 Před 3 lety

    Thank you doctor Don!
    Question! After inflation, all mater cool down...Where all that energy of heat goes and how?

  • @helenel4126
    @helenel4126 Před 3 lety +1

    About that “conservation” point. My hair stood up like Planck’s. Holy zorblatts, Doc!

  • @jbnycyoutub
    @jbnycyoutub Před 3 lety +1

    Hi Don
    Are zortblats defined in terms of scroungknewts and feffphrittminskitts?
    Or do you just normalize the units.
    Thanks!
    ;)

  • @gregoryrollins59
    @gregoryrollins59 Před 3 lety

    Recently I've started listening to D:REAM and Dare with and without Brian Cox. D:ream I'm really liking so far. Funny you mention music. Thanks for the info i did learn something. I have more to learn. Thanks.
    Peace and agap'e.

  • @malchicken
    @malchicken Před 3 lety

    Thanks for making this series, very neat idea. Look forward to looking thru it. If you haven’t answered, I’d like to ask about quantum field theory. So if energy is conserved in our system, then is that why we call particles as “fields” because they act like they “share energy” equally across the whole system? Is that sort of ‘sharing nature’ what defines a field? Is there any way to test that outside of the math?

    • @malchicken
      @malchicken Před 3 lety

      Also, please comment, in this video you mention that the smallest plank unit just means our current physics break down, and as I understand black holes are similar, so are black holes like an enlarged version of that ‘at the Plank length’ level? Like things getting too small, supernova’s get “too energetic”? So it reaches the...energy?...plank limit and rips space a new one?

  • @ArdaKaraduman
    @ArdaKaraduman Před 3 lety

    Dr Don, the videos are just getting better and better, thank you for the great information and humor :)
    And, Americans, you should vote this guy your president !

  • @ericklein3960
    @ericklein3960 Před 3 lety

    i learned something that i never really thought about in depth before

  • @GawainDragon
    @GawainDragon Před 3 lety

    Can you please make a video about the Delayed choice quantum eraiser experement and what "the information going back in time" means.

  • @modolief
    @modolief Před 3 lety

    You taught me something I didn't know!

  • @eritronc
    @eritronc Před 3 lety +1

    Siempre me pregunté porqué el hierro era el ultimo producto de la fusión nuclear. No sabia si preguntárselo a un físico o a un químico. Gracias Don por la respuesta!!!!