Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 41
a pin of brass or a strip of tinfoilprojecting from the metallic sole on to the top of the cake,so that it touches the plate each time, and thus neutralizes thenegative charge by allowing electricity to flow in from the earth. STATIC ELECTRICITY 21 Since the electricity thus yielded by the… … Figs. 26 to 29.—Explanation of Faradays ice pail experiment. For simplicity the electro-scope, insulating stand and silk thread have been omitted. Only the three principalconductors K, P, and the earth E are shown. In fig. 26 the ball K is sufficiently closeto P to act inductively on it; six lines…
Electrical engineering
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