Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 26
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),that has been electrified by friction, it is repelled by the glass aftercontact (Fig. 2). Again, a second pith-ball, similarly hung by a A I FUNDAMENTAL PHENOMENA [2- silk… … Fici. 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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