• hsdkfr734r
    link
    fedilink
    English
    arrow-up
    4
    ·
    edit-2
    4 hours ago

    Thanks. Let’s see:

    The weak equivalence principle, also known as the universality of free fall or the Galilean equivalence principle can be stated in many ways.

    And

    “… in a uniform gravitational field all objects, regardless of their composition, fall with precisely the same acceleration.” “The weak equivalence principle implicitly assumes that the falling objects are bound by non-gravitational forces.”[11]

    I’m just beginning to understand. I’m not there yet.

    • itslilith@lemmy.blahaj.zone
      link
      fedilink
      English
      arrow-up
      14
      ·
      4 hours ago

      If you are standing in a closed box, there is no experiment you can make that tells you whether that box is standing on earth, or is on a rocket in space accelerating at 9.81m/s²

      This has a bunch of interesting implications about the nature of spacetime