Gauss's law test of gravity at short range.
Abstract
A null test of the gravitational inversesquare law can be performed by testing Gauss's law for the field. The authors have constructed a threeaxis superconducting gravity gradiometer and carried out such a test. A lead pendulum weighing 1500 kg was used to produce a timevarying field. This experiment places a new (2σ) limit of α = (0.9±4.6)×10^{4} at λ = 1.5 m, where α and λ are parameters of the generalized potential φ = (GM/r)(1 + αe^{r/λ}).
 Publication:

Physical Review Letters
 Pub Date:
 March 1993
 DOI:
 10.1103/PhysRevLett.70.1195
 Bibcode:
 1993PhRvL..70.1195M
 Keywords:

 Accelerometers;
 Gauss Equation;
 Gravitation;
 Gravity Gradiometers;
 Null Hypothesis;
 Calibrating;
 Error Analysis;
 Instrument Errors;
 Sensitivity;
 Physics (General);
 Gravitation Theory: Tests;
 04.90.+e;
 04.80.+z;
 Other topics in general relativity and gravitation