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APS » Journals » Phys. Rev. D » Volume 64 » Issue 8
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Phys. Rev. D 64, 082001 (2001) [7 pages]

Testing Newton’s inverse square law at intermediate scales

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P. Baldi and E. G. Campari
Dipartimento di Fisica, Universita’ di Bologna, viale Berti-Pichat 6/2, 40127 Bologna, Italy

G. Casula
Istituto Nazionale di Geofisica e Vulcanologia, sezione di Bologna, viale Berti-Pichat 6/2, 40127 Bologna, Italy

S. Focardi and F. Palmonari
Dipartimento di Fisica, Universita’ di Bologna and INFN sezione di Bologna, viale Berti-Pichat 6/2, 40127 Bologna, Italy

Received 7 February 2001; published 24 September 2001

Here we report the results of a new analysis of the data obtained in the framework of an experiment consisting of the measurement of the gravitational signal induced by varying the water mass of a lake. A more precise calibration of the superconducting gravimeter used in the experiment has been performed with the use of an absolute instrument; furthermore, a knowledge of the absolute amplitude of the solid Earth tides of the station has been improved. The result of this analysis shows an agreement between data and Newtonian theory to within a 0.17% level.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.64.082001
DOI:
10.1103/PhysRevD.64.082001
PACS:
04.80.-y, 85.25.-j, 94.10.Jd
 
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