86.1 The gravitational force The experimental results for proving mg=m, experimenter time (m, -mG)/m, Galilei 1610 < Newton 1680 <1x10- Eotvos 1890-1915 <3×10-9 Dicke 1964 <1x10 Braginsky 1971 <9×10-13 86.1 The gravitational force 5 Principle of equivalence Einstein's thin king experiment 14 The experimental results for proving mG=mI experimenter Galilei Newton Eotvos Dicke Braginsky time 1610 1680 1890-1915 1964 1971 m I mG m I ( − ) / 3 2 10 − < × 3 1 10 − < × 9 3 10 − < × 11 1 10 − < × 13 9 10 − < × §6.1 The gravitational force §6.1 The gravitational force 5Principle of equivalence Einstein’s thinking experiment 1: