• @[email protected]
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    5 hours ago

    I don’t understand. What’s a uniform gravitational field and why does being inside one feels like standing in an accelerating elevator?

      • @[email protected]
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        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.

        • @[email protected]
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          144 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