WordNet
n. (physics) the principle that an observer has no way of distinguishing whether his laboratory is in a uniform gravitational field or is in an accelerated frame of reference
Usage examples of "principle of equivalence".
The principle of equivalence must hi this case apply, and a rigorous requital is necessary.
To appreciate its importance, we need only imagine Einstein trying to formulate general relativity without having had the happy thought he experienced in the Bern patent office in 1907 that led him to the principle of equivalence.
Half a dozen devices on the ship, including all its positional and navigation systems, could be explained very well in one simple theory-// Aybee were willing to abandon the principle of equivalence.
This is a new Principle of Equivalence, a new symmetry between observers.