Gauss's law test of gravity at short range

Details Gauss's law test of gravity at short range Gauss's law test of gravity at short range

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..70.1195m&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 70, no. 9, p. 1195-1198.

Physics

24

Accelerometers, Gauss Equation, Gravitation, Gravity Gradiometers, Null Hypothesis, Calibrating, Error Analysis, Instrument Errors, Sensitivity

Scientific paper

A null test of the gravitational inverse-square law can be performed by testing Gauss's law for the field. We have constructed a three-axis superconducting gravity gradiometer and carried out such a test. A lead pendulum weighing 1500 kg was used to produce a time-varying field. This experiment places a new (2-sigma) limit of alpha = (0.9 + or - 4.6) x 10 exp -4 at lambda of 1.5 m, where alpha and lambda are parameters for the generalized potential phi = -(GM/r)(l + alpha e exp -r/lambda).

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