St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 19
the knob, a brightspark passes between them.This device is called a dis-charger. Fig. 13 shows adischarge through etherwhich the spark ignites. 16. The Leyden Bat-tery, Fig. 14, consists ofseveral jars connecfled in such a way that the area of theinner and outer coatings is greatly increased. The…
Electricity
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