Like Fluoride or Oxygen.

  • @[email protected]
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    01 year ago

    There was definitely something like that - I am not sure if free-fall and being accelerated in a gravitational field are the same though. It may be that GR is talking about moving along lines in space-time that have the same gravitational potential (orbits), and moving across potential lines counts as an accelerated frame of reference in which you wouldn’t observe the same as in a reference frame moving at constant speed.

    • @[email protected]
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      1 year ago

      I was thinking of the Equivalence Principle:

      the equivalence of gravitational and inertial mass, and Albert Einstein’s observation that the gravitational “force” as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.

      • @[email protected]
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        01 year ago

        okay, but that would be an accelerated frame of reference, not equivalent to one that is “gravity free”