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Letters to Nature
Nature 208, 279 (16 October 1965); doi:10.1038/208279a0

A New Absolute Determination of the Acceleration due to Gravity at the National Physical Laboratory


Standards Division, National Physical Laboratory, Teddington, Middlesex.

AN absolute determination of the acceleration due to gravity at a site in the National Physical Laboratory has recently been completed. It is the first to be made by timing the symmetrical up-and-down motion of a body moving freely under gravity, and the uncertainty of the result is considerably less than that of any previous measurement.

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