Questions tagged [equivalence-principle]
In general relativity, the equivalence principle is the equivalence of gravitational and inertial mass, along with the observation that the gravitational "force" experienced on a massive body is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.
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What do we know about mass equivalence principle for non-nucleons, mass in e.g. neutrino oscillations?
While special relativity says inertial mass is equivalent with energy, there are at least two more types of mass, for which equivalence seems not so certain - let me briefly summarize and ask for more ...
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Principle of relativity near a charged earth
If earth was electrically charged is it was possible for a person in a train to know that if it is standing still or it is moving by constant velocity?
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Gravity same as free space?
Einstein’s remarkable insight was that a man falling freely experiences no gravity and his experiences are identical in some sense to a man far away in free space. But the man falling is increasing ...
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Rindler Time Dilation vs Gravitational Time Dilation in Accelerating Refernece Frame
I am trying to reconcile Rindler time dilation with gravitational time dilation between two points in an accelerating frame of reference separated by a distance d (e.g. 1 light-second). As far as I ...
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Violation of equivalence principle [closed]
Light is the fastest thing in universe but the speed of light is still a finite number. Imagine me and my friend are some separated by some distance and I fire a laser at my friend. If my friend is in ...
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Why are there no reported experimental deviations from the Equivalence Principle due to nonhomogeneous gravitational fields?
Wikipedia says: [The assumption of? -ed] Uniformity of the gravitational field eliminates measurable tidal forces originating from a radial divergent gravitational field (e.g., the Earth) upon finite ...
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Tidal Forces vs. Einstein’s Equivalence Principle [duplicate]
The essence of Einstein’s Equivalence Principle is that in General Relativity a free falling object’s inertial frame of reference is equivalent to the inertial frame of reference of an object floating ...
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Do we use the equivalence principle to quantify gravitational potential energy?
Imagine a helium balloon suspending a 10kg rock just above the ground. Because neither is moving, we would normally say that they have potential energy, with the potential for the balloon to shoot ...
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