St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 18
Fig II Fig. 12. of apparatus called condensers, a terrific charge of staticelec5lricity may be stored. Fig. 11 .shows the mostcommon form of condenser, known as the Leydcn jar.It consists of a glass jar with an inside and outside coatingof tin-foil. To charge the jar it is held in the hand so that…
Electricity
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