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equiv'alence prin"ciple



Physics.
(in relativity) the principle that, in any small region of space-time, the effects of a gravitational field are indistinguishable from those of an appropriate acceleration of the frame of reference. Also called Einstein's equivalency principle, principle of equivalence.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

equivalence classequivalence relation

 

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