Newton's gravitational constant with uncertainty less than 100 ppm.

Details Newton's gravitational constant with uncertainty less than 100 ppm. Newton's gravitational constant with uncertainty less than 100 ppm.

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995itim...44..494f&link_type=abstract

IEEE Trans. Instrum. Meas., Vol. 44, No. 2, p. 494 - 497

Physics

23

Gravitational Constant

Scientific paper

We have obtained a value for Newton's gravitational constant (coverage factor of 1) of G = 6.6656(6)×10-11 m3kg-1·s-2 with a combined standard uncertainty of 95 ppm. The method is based on a torsion balance which is servocontrolled to constant angular position with an electrostatically induced torque balancing the gravitationally induced torque. This electrostatically induced torque is calibrated using an acceleration method.

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