Meadowcroft, Wm. H. (William Henry), b. 1853 · New York & London, Harper & brothers · leaf 73
amount of current thatit is too expensive toproduce them in largequantities by batteries.A small number oflamps could be lightedby batteries, but if wewere to attempt to usethem to light 500 or1,000 lamps together,the expense would beso enormous as tomake it entirely out ofthe question. There are… … Fig. 16 ELECTRIC LIGHT more thoroughly when you have finishedreading this little book. Well, you will ask, if we cannot use bat-teries, what is used to produce these electriclights? Machines called dynamo-electric ma-chines, or generators, which are driven bysteam-engines or water-power, are used…
Electricity
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