Determination of the gravitational constant by an experiment at a pumped-storage reservoir

Details Determination of the gravitational constant by an experiment at a pumped-storage reservoir Determination of the gravitational constant by an experiment at a pumped-storage reservoir

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvl..63.2621m&link_type=abstract

Physical Review Letters, Volume 63, Issue 24, December 11, 1989, pp.2621-2624

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Other Topics In General Relativity And Gravitation

Scientific paper

In August 1988 continuous gravity measurements were made in a pumped-storage reservoir in SW Germany. Daily water-level variations of 5-22 m produced, together with the tides, a quasiperiodic gravity signal which could be measured with a resolution well below 1 μgal=10-8 m s-2. The experiment's goal was a search for deviations from Newton's gravitational law, but it can also be viewed as a measurement of the gravitational constant G for effective mass distances of 40-70 m. The deviation of G from the laboratory value was found to be (0.25+/-0.4)% and thus is not significantly different from zero.

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