A natural philosophy : embracing the most recent discoveries in the various branches of physics, and exhibiting the application of scientific principles in everyday life .. (1899)
Quackenbos, G. P. (George Payn), 1826-1881 · New York, Cincinnati [etc.], American book company · leaf 297
the glassand the sealing-wax attract the ball before they have imparted to it anyof their own electricity. 2. That, after so doing, they both repel the ball. lins. 761. By what is electricity developed? T62. What familiar instances are men-tioned of the production of electricity by friction ? What… … 292 ELECTRICITY. Experiment 2.—Suspend two pith-balls from a pillar by silk threads, andpj-eeent to them an electrified glass tube or piece of sealing-wax. They.Fig. ztil. will both be attracted; but, on withdrawing the elec- tric, instead of hanging vertically, they will repeleach other, as shown…
Physics
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