Poynting, J. H. (John Henry), 1852-1914, Shakespear, Gilbert Arden, ed, Barlow, Guy, joint ed · Cambridge, University Press · leaf 667
ult. But at least he showed thepossibihty of such work, and since his time many experiments have beencarried out on his hues under more favourable conditions. Now, however,I think it is generally recognised that the difficulty of estimating the massof a mountain from mere surface chips is… … Fig. 1. Cavendialis Apparatus. These other experiments are on the Une indicated by Newton in hiscalculations of the attraction of two spheres. The first was carried out byCavendish. In the apparatus (Fig. 1) he used two lead balls, B, B, each 2 inches indiameter. Thefee were hung at the ends of a…
Poynting, J. H. (John Henry), 1852-1914 · Physics
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