Brans-Dicke theory rejects one form of this theory, allowing for a fifth fundamental force.
Bondi and Gold suggested this theory may be contradicted by the existence of electromagnetic radiation from an eternally accelerating particle. Witteborn and Fairbank were the first to experimentally verify it was true for subatomic particles. Brans-Dicke theory rejects one form of this theory, allowing for a fifth fundamental force. The STEP experiment very accurately tested this principle by measuring masses in a drag-free satellite that corrects for gravity gradient disturbances. (*) EotvÃ¶s's experiments with a torsion balance confirmed the weak form of this statement, which Einstein strengthened by adding conditions of local Lorentz and position invariance. For 10 points, give this principle that states experimental outcomes are independent of their velocity relative to a gravitational field, implying that gravitational and inertial mass are the same.
Bondi and Gold suggested this theory may be contradicted by the existence of electromagnetic radiation from an eternally accelerating particle.
equivalence principle [prompt on "relativity" or "general relativity"]