A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 220
tive, but not for measuring its amount orvalue. In the gold-leaf electroscope, two gold leaves,n, n, Fig. 239, suspended near each other, showby their repulsion the presence of an electriccharge. Two pith balls may be used for the samepurpose. The pith balls B, B, shown in Fig. 237, forma simple… … Fig. 237 Ffth Ball Electroscope.an unknown charge, the gold leaves or pith balls arefirst slightly repelled by a charge of known name,as, for example, positive, applied to the knob C,Fig. 239. They are then charged by the electrifiedbody whose charge is to be determined. If tht yare further…
Electricity · Electrical engineering
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