Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 177
Fig. 81. Fig. 82. The use of a gas in the receiver at the atmospheric pressure,although not attacking the carbon, served to destroy it in timeby air-washing, or the attrition produced by the rapid passageof the air over the slightly coherent highly heated surface ofthe carbon. Mr. Edison changed…
Electrical engineering
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