Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011astrv...6g...8b&link_type=abstract
Astronomical Review, vol.6, no. 7, p. 8-14.
Astronomy and Astrophysics
Astronomy
Gravity, Newtonian Gravity, General Relativity, Equivalence Principle, Cavendish Balance, Interior Falling Experiment
Scientific paper
Given a uniformly dense sphere with a hole through its center, gravity is supposed to cause an object dropped into the hole to oscillate between the extremities. This is a prediction of both Newton's and Einstein's theories of gravity. Though every physicist knows what is supposed to happen, nobody has ever seen it happen. Failure to back up the predicted oscillation with empirical evidence is not due to insurmountable technical obstacles; a laboratory experiment to test it is quite feasible. According to the ideals of science, we should not be satis ed with analogies or extrapolations suggesting that the prediction is correct. We should, if possible, get the answer directly from Nature.
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