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Experiments about the Motion of Pendulums in Vacuo. By the Reverend Mr. W. Derham, F. R. S.
Philosophical Transactions (1683-1775)
Vol. 24 (1704 - 1705), pp. 1785-1789
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/102960
Page Count: 6