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Cavendish experiment
(redirected from Torsion bar experiment)

    Also found in: Wikipedia, Hutchinson 0.02 sec.

Cavendish experiment

Measurement of the force of gravitational attraction between pairs of lead spheres, which allowed the first calculation of the value of the universal gravitational constant, G. Performed in 1797–98 by the British scientist Henry Cavendish (1731–1810) using a torsion balance, the experiment was popularly known as “weighing Earth,” because determination of G permitted calculation of Earth's mass.



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