| NOUN | cognition | principle of equivalence | (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 |
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| 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. | |
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| Category | physics, natural philosophy | The science of matter and energy and their interactions |
| Broader | principle, rule | A rule or law concerning a natural phenomenon or the function of a complex system |
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