Аннотация
We measured Newton's gravitational constant G using a new torsion balance
method. Our technique greatly reduces several sources of uncertainty compared
to previous measurements: (1) it is insensitive to anelastic torsion fiber
properties; (2) a flat plate pendulum minimizes the sensitivity due to the
pendulum density distribution; (3) continuous attractor rotation reduces
background noise. We obtain G = (6.674215 +- 0.000092)x10^-11 m^3kg^-1s^-2; the
Earth's mass is, therefore, M = (5.972245 +- 0.000082)x10^24 kg and the Sun's
mass is M = (1.988435 +- 0.000027)x10^30kg.
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