# Is the result of (every) research on acceleration equivalent to gravity?

Is the result of an experiment on acceleration equivalent to another experiment in a gravitational field?

If I have an experimental conclusion from research under uniform acceleration, can the conclusion be extended to apply to gravity too?

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Comment to the question (v2): One difference is that gravity in general produces tidal forces, while (linear) acceleration doesn't. – Qmechanic May 26 '13 at 13:06
@Qmechanic: This version of the equivalence principle is local. Tidal effects are nonlocal in the sense that when you restrict to a region of size $L$, they vanish like a higher power of $L$ than the effect of gravity itself. Similar considerations apply to curvature, which is not equivalent to an acceleration of a flat spacetime. – Ben Crowell May 26 '13 at 16:07
@Qmechanic well.... if I'm on a centripetal station in orbit, i Do experience tidal effects in a sense, because the force is not exactly the same everywhere near me. There is also some dependence of speed, which is not present on gravity forces, that I'm aware – lurscher Jul 5 '13 at 17:47