Test of Newton's inverse-square law in the greenland ice cap

An Airy-type geophysical experiment was performed in a 2-km-deep hole in the Greenland ice cap at depths of between 213 and 1673 m in order to explore possible violations of Newton's inverse-square law. The results revealed an anomalous gravity gradient. It is pointed out that the present pheno...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1989-02, Vol.62 (9), p.985-988
Hauptverfasser:	ANDER, M. E, ZUMBERGE, M. A, MCMECHAN, G. A, SASAGAWA, G, STEVENSON, J. M, BACKUS, G, CHAVE, A. D, GREER, J, HAMMER, P, HANSEN, B. L, HILDEBRAND, J. A, KELTY, J. R, LAUTZENHISER, T, SIDLES, C, WIRTZ, J, PARKER, R. L, AIKEN, C. L. V, GORMAN, M. R, NIETO, M. M, COOPER, A. P. R, FERGUSON, J. F, FISHER, E
Format:	Artikel
Sprache:	eng
Schlagworte:	640106 - Astrophysics & Cosmology- Cosmology BOREHOLES CAVITIES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CORRECTIONS DEPTH DEPTH 1-3 KM DIMENSIONS Exact sciences and technology Experimental studies of gravity General relativity and gravitation GRAVITATIONAL FIELDS GREENLAND ICE ICE CAPS NUCLEAR POTENTIAL Physics POTENTIALS TESTING YUKAWA POTENTIAL
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Beschreibung
Zusammenfassung:	An Airy-type geophysical experiment was performed in a 2-km-deep hole in the Greenland ice cap at depths of between 213 and 1673 m in order to explore possible violations of Newton's inverse-square law. The results revealed an anomalous gravity gradient. It is pointed out that the present phenomenon may be due to unexpected geological features in the rock below the ice and that it cannot be unambiguously attributed to a breakdown of Newtonian gravity. (R.R.)
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.62.985