APS » PROLA » Phys. Rev. Lett. » Volume 87 » Issue 11

Phys. Rev. Lett. 87, 111101 (2001) [4 pages]

A New Determination of G Using Two Methods

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T. J. Quinn1 *, C. C. Speake2, S. J. Richman1 †, R. S. Davis1, and A. Picard1
1Bureau International des Poids et Mesures, Pavillon de Breteuil, F-92312 Sèvres Cedex, France
2School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom

Received 12 February 2001; published 27 August 2001

We present the results of a measurement of G made with a torsion-strip balance used in two substantially independent ways. The two results agree to within their respective uncertainties; the correlation coefficient of the two methods is -0.18. The result is G  =  6.675 59(27)×10-11 m3 kg-1 s-2 with a standard uncertainty of 4.1 parts in 105. Our result is 2 parts in 104 higher than the recent result of Gundlach and Merkowitz.


©2001 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v87/e111101
DOI: 10.1103/PhysRevLett.87.111101
PACS: 04.80.Cc, 06.20.Jr

* Corresponding author.Email address: tquinn@bipm.org
† Current address: REO Inc., 1855 S. 57th Court, Boulder, CO 80301.

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