'They were seen to fall evenly', c1918. In 1589 the Italian scientist Galileo Galilei (1564-1642) dropped two balls of different masses from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass. From Story-Lives of Great Scientists, by F. J. Rowbotham [Wells Gardner, Darton & Co. Ltd., London, c1918]
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