Trebel, George. [from old catalog] · New York, F. Tousey · leaf 28
in the liquid all the time. (Carbon in the form of char-coal or electric light pencils will do.) This battery gives a very energetic current for a short time, ! USE ELECTRICITY. 21 but the liquid is soon exhausted. It is a very convenient bat-tery, as, when not in use, we have only to draw the zinc… … This is the best and most powerful form of battery knownWith two cells of this battery, a small two-candle incandescentlamp may be burned for 2 1-2 hours. Eighteen small cells willburn a 6-candle lamp for 1 1-2 hours. Later on I will describea pocket battery which any boy can make and which will…
Electricity
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