principle of equivalence
Noun
Meaning
(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
Source: WordNetSynonyms
Hypernyms
Examples
Other principles postulated by Einstein and later vindicated are the principle of equivalence and the principle of adiabatic invariance of the quantum number.
The true hallmark of poetry is according to Jakobson "the projection of the principle of equivalence from the axis of selection to the axis of combination".