Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 100
increased nine times,and so on. Hence the force is inversely proportional to the square ofthe distance. As an example we might note that the angle betweenthe balls in the first position was 36°. On twistingthe upper end of the wire until the angular distance washalved, we should find that the twist… … Pig. 62. 60. The Attracted Disc Electrometer. Let AB, Fig. 52, represent a circular disc supported horizontally fromone arm of a balance and counterpoised if necessary by 59-60] MEASUREMENT OF POTENTIAL 91 weights in the other pan, and let CD be a second disc fixedin a horizontal position at a…
Electricity · Magnetism
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