Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 285
in conductors of carbon, a certain current doesnot give so large a return in light as when employed to producethe electric arc between carbon points on a large scale, yet theamount of light developed by a given expenditure of power isamply sufficient to warrant the statement that it is an…
Electrical engineering
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