Elementary lessons in electricity & magnetism (1895)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916 · New York and London, Macmillan and co. · leaf 26
ght, thegreater will be the number of electric lines thus affectingthe instrument. There being a tension along the linesand a pressure across them, the effect is to draw the goldleaves apart as though they repelled each other. The Gold-Leaf Electroscope will also indicate roughlythe amount of… … Fi£. lo ELECTROSCOPE 19 recourse must be had to the instruments known asElectrometers, described in Lesson XXII. In another form of electroscope (Bohnenbergers) asingle gold leaf is used, and is suspended between twometallic plates, one of which can be positively, the othernegatively electrified,…
Electricity
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