Possibility of a geophysical determination of the Newtonian gravitational constant

Details Possibility of a geophysical determination of the Newtonian gravitational constant Possibility of a geophysical determination of the Newtonian gravitational constant

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..377s&link_type=abstract

Geophysical Research Letters, vol. 5, May 1978, p. 377, 378.

Physics

13

Density Measurement, Gravimetry, Gravitational Constant, Sea Water, Flotation, Gravitation Theory, Gravity Anomalies, Ocean Surface, Spheres, Symmetrical Bodies

Scientific paper

Measurement of sea-water density and gravity variations from the ocean surface to a depth of about five km may provide a method for the geophysical determination of the Newtonian gravitational constant. The density measurements could be derived from the flotation force on a hollow silica sphere of near-neutral buoyancy and known compressibility. The chief technical challenge of the geophysical determination is to make precise gravity measurements at sea; uncertainty due to localized gravity anomalies may limit the accuracy of the determination.

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