My text explains that free float frames are locally indistinguishable from flat space-time in the sense that in a small enough region measuring instruments will be unable to detect gravitational tidal forces. This region may be tiny if tidal forces are large or if measuring instruments are extremely sensitive.(adsbygoogle = window.adsbygoogle || []).push({});

Can tidal forces be intense enough so that the free float frame must be chosen at subatomic dimensions where measurements are subject to quantum mechanical randomness? If so how does one detect tidal forces in such a tiny region?

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# General Relativity at the microscopic level

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