Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 191
and out again by the other. Figs. 89 and 90 represent the lamp and*socket, and the methodof attachment, showing the tap by which the light is turned onand off. After the lamp is once screwed into the socket it needsno further attention or care until the carbon breaks; then theold lamp is taken out… … Figs. 89 and 90. Mr. Edison prefers in his electric lighting to use an incandes-cent lamp, which shall give a light about equal to a standardgas jet of eight or sixteen candle-power. In order to insureeconomy of material in the conductors therefor the incandescingportion is usually of very high…
Electrical engineering
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