A transient mass fluctuation, predicted by Lorentz-invariant theories of gravitation wherein inertia is gravitationally induced, can be combined with a synchronous thrust to produce a stationary change in the apparent weight of an object. A substantial effect of this sort—on the order of tenths of a gram or more—should be achievable in laboratory scale apparatus. A detailed derivation of the predicted transient mass fluctuation is given in an appendix.

Key words

general relativity Mach's principle experimental gravitation

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