Redetermination of the Newtonian gravitational constant G

Details Redetermination of the Newtonian gravitational constant G Redetermination of the Newtonian gravitational constant G

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..48..121l&link_type=abstract

Physical Review Letters, vol. 48, Jan. 18, 1982, p. 121-123.

Physics

136

Gravitational Constant, Harmonic Oscillation, Newton Theory, Gravitational Fields, Standards, Torsion, Vibration Damping

Scientific paper

The universal Newtonian gravitational constant is being redetermined at the National Bureau of Standards with use of the method of Boyes (1895) in which the period of a torsion pendulum is altered by the presence of two 10.5-kg tungsten balls. The difference in the squares of the frequencies with and without the balls is proportional to G. The resulting value of G is (6.6726 + or - 0.0005) x 10 to the -11th cu m/sec kg.

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