• perviouslyiner@lemmy.world
    link
    fedilink
    arrow-up
    28
    arrow-down
    5
    ·
    1 year ago
    • The render distance (observable universe)
    • The pixel size (Planck units)
    • And the update rate (‘speed of light’ = speed of information being updated)
    • bionicjoey@lemmy.ca
      link
      fedilink
      arrow-up
      16
      arrow-down
      5
      ·
      1 year ago

      Calling Planck units “pixels” is extremely reductive. This is just naively applying video game concepts to physics with a poor understanding of both.

      • BrerChicken @lemmy.world
        link
        fedilink
        arrow-up
        13
        ·
        1 year ago

        I took an entire graduate course in QM and a quantized Universe does, in fact, seem pixelated. That’s exactly how I explain it to people. There’s simply a finite level to how closely you can zoom in. Space, time, and energy are all quantized, and maybe even gravity though we haven’t figured that one out yet.

        • bionicjoey@lemmy.ca
          link
          fedilink
          arrow-up
          3
          arrow-down
          4
          ·
          1 year ago

          A finite level to how close you can zoom in is very different from pixels. Pixels (or voxels in this case) are indivisible elements of a larger whole that exist along an evenly spaced grid. The universe doesn’t have a Cartesian coordinate system measured in Planck lengths

          • BrerChicken @lemmy.world
            link
            fedilink
            arrow-up
            3
            ·
            1 year ago

            Pixels (or voxels in this case) are indivisible elements of a larger whole that exist along an evenly spaced grid.

            That’s exactly what a Planck unit of spacetime is. And yes, the Universe–like a screen–is divided into an evenly-spaced grid any time you choose a coordinate system.

      • BrerChicken @lemmy.world
        link
        fedilink
        arrow-up
        2
        arrow-down
        1
        ·
        1 year ago

        I took an entire graduate course in QM and a quantized Universe does, in fact, seem pixelated. That’s exactly how I explain it to people. There’s simply a finite level to how closely you can zoom in.