Elementary treatise on electricity and magnetism : founded on Joubert's "Traité élémentaire d'électricité" (1909)
Foster, G. Carey (George Carey), Porter, Alfred William, 1863-1939, Joubert, Jules François · London : Longmans · leaf 25
ctrification by Contact.—If a pith-ball (a) hung by a fine fibre of raw silk (Fig. 1) is allowed to touch a piece of glass (d),tliat has been electrified by friction, it is repelled by the glass aftercontact (Fig. 2). Again, a second pith-ball, similarly hung by a A e FUNDAMENTAL PHENOMENA [2- silk… … Fig. 1. Fig, 2. in fact, they respectively behave towards the glass and india-rubber,and towards each other, just as a second pair of pieces of glassand india-rubber which had been rubbed together would do. Thatis, the two pith-balls have acquired properties exactly like those ofthe glass and…
Electricity · Magnetism
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