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 125
with the glass,further pressure does not increase the electrification. The surfaceof the rubber should be covered with a conductor such as that 72] FRICTIONAL MACHINE 101 variety of sulphide of tin known iis aurum niusiruin, or, still better,with Kieniiiayers aniahjam, which is composed of zinc,… … Fig. 54. difference of potentials between them, the glass becoming positivelyelectrified, and the lubber negative. This difference of potentialsis at first very small, since the eq\;al oppositely electrified surfacesare very close togethei. But as each portion of the glass movesaway from the…
Electricity · Magnetism
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