5 comments

  • namanyayg 4 hours ago
    We intuitively think in particles and see a world of billiard balls colliding with one another.

    But actually everything is merely waves and fields.

    There's going to be a time where humans finally reconcile the quantum with the newtonian -- and I can't wait for that day

    • canjobear 2 hours ago
      There's no problem reconciling the quantum with the Newtonian. Quantum mechanics recovers Newtonian mechanics in the appropriate limit. The problem is reconciling the quantum and the Einsteinian.
      • sosodev 2 hours ago
        But there’s no quantum explanation of gravity, right?
        • lmpdev 2 hours ago
          At this point we have several

          They’re all largely untestable though

          String theory, LQG, half a dozen others

        • arthurcolle 2 hours ago
          Classified
    • hliyan 2 hours ago
      I think neither analogy is correct. We're using macro metaphors (real world things at human time and spatial scales) to explain microscopic phenomena that may not correspond to anything that we find familiar.
    • chadcmulligan 23 minutes ago
      I don't have the math, but doesn't quantum field theory say this?
    • jagged-chisel 3 hours ago
      That we're just collections of wave interference is wild.
    • thaumasiotes 4 hours ago
      > But actually everything is merely waves and fields.

      The two-slit experiment says otherwise.

      • jasonwatkinspdx 1 hour ago
        It does not. It shows that individual photons self interfere, so they cannot be idealized particles.
      • FloorEgg 3 hours ago
        The way I've always thought of this is there are potentials for interactions and interactions.

        Interactions act like point particles and potentials for interactions act like waves.

        Arguing over the distinction is a bit like debating whether people are the things they do, or the thing that does things. There is some philosophical discussion to be had, but for the most part it doesn't really matter.

      • gucci-on-fleek 3 hours ago
        Hmm? The double slit experiment definitely shows that particles are waves—weird quantum waves, but still waves.
        • fragmede 3 hours ago
          what happens when you only send a single photon down the line though?
          • bobbylarrybobby 2 hours ago
            It still interferes with itself, and that interference affects the pattern of detections. It's as if the photon were a wave right up until the moment of detection, at which points it's forced to “particalize” and pick a spot to be located at — but it's the amplitude of the wave it was just before detection that determines where on the detection screen the photon is likely to show up. If you send many photons through one at a time, the detections (each just a point on the screen) will fill out the expected double slit pattern.
          • mpyne 3 hours ago
            It's worth reading about, but it's kind of wave-like even then: https://en.wikipedia.org/wiki/Double-slit_experiment#Interfe...

            It would be going too far to say it's only a wave though. It's both wave and particle.

            • binary132 3 hours ago
              The way I read GGP was as contradicting the assertion that everything is just waves and not at all particles.
          • gucci-on-fleek 1 hour ago
            As the other comments have already mentioned, it interferes with itself, so you still observe the same interference patterns [0] [1]. Which admittedly seems impossible at first, but so does the rest of quantum physics.

            [0]: https://www.feynmanlectures.caltech.edu/III_01.html#Ch1-S5

            [1]: https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality#...

          • ggm 2 hours ago
            I've always wondered what degree of confidence exists amongst the cogniscenti that a single photon event happened. I tend to think the criteria of measurement here would suggest the most likely outcome was a shitload more than 1 photon, and that all the "but we measured we can see one only" measurements are themselvs hedged by a bunch of belief.

            That said, I do like the single photon experiment, when it's more than a thought experiment.

          • danparsonson 1 hour ago
            It's a wave of probability, that interferes through the slits and then collapses into a probability of one somewhere along the wavefront at the point of detection. Whatever that means :-)
          • rolph 3 hours ago
            do it once, it looks like one particle.

            repeat the single photon launch many times, and you see a wavelike distribution of photon strikes

      • dcl 1 hour ago
        Are you getting confused with the photoelectric effect experiment?
  • ghostpepper 2 hours ago
    Obviously hindsight is 20/20 but this sentiment just reeks with comical levels of hubris

    > However, the new research demonstrates that the magnetic field of light, long thought irrelevant,

  • magphys 4 hours ago
    > To quantify this influence, the team applied their model to Terbium Gallium Garnet (TGG), a crystal widely used to measure the Faraday effect. They found that the magnetic field of light accounts for about 17% of the observed rotation at visible wavelengths and up to 70% in the infrared range.

    Nearly 20% seems already significant, but 70%?! that's massive.

  • plaguna 2 hours ago
    But do they understand how magnets work?
  • dmead 3 hours ago
    [flagged]
    • idiotsecant 3 hours ago
      People in countries you don't like can still do valid science.