Accession Number : ADA278449


Title :   Geophysical Tests for Intermediate-Range Forces


Descriptive Note : Final rept. 6 Dec 1989-31 May 1993


Corporate Author : PURDUE UNIV LAFAYETTE IN


Personal Author(s) : Fischbach, Ephraim ; Talmadge, Carrick


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a278449.pdf


Report Date : 01 Nov 1993


Pagination or Media Count : 146


Abstract : The suggestion in 1986 of a possible 'fifth force' in Nature led to considerable experimental and theoretical effort to detect such a force, and deviations from Newtonian gravity. Geophysical experiments play an important role in the detection of such a force, because the natural scale of geophysical experiment covers a range that is not readily accessible via other methods. This work describes several investigations which search for the presence of non- Newtonian gravity. These include a new tower experiment, and an analysis of exponential models of non-Newtonian gravity. In the course of carrying out the tower experiment problems were encountered in working with the Global Positioning System, and these are described in detail. As a result of this work we can say that support for the validity of Newtonian gravity over geophysical scales has increased. Non-Newtonian Gravity Gravitational Physics.


Descriptors :   *GRAVITY , *GEOPHYSICS , INERTIA , DETECTION , MODELS , SPIN STATES , BOUGUER GRAVITY ANOMALIES , GRAVITY ANOMALIES , SPECIAL FUNCTIONS(MATHEMATICS) , BIBLIOGRAPHIES , TELEVISION SYSTEMS , GLOBAL POSITIONING SYSTEM


Subject Categories : Geodesy


Distribution Statement : APPROVED FOR PUBLIC RELEASE