Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 49
Figs. 3,815 and 3,816.—Two forms of condenser. Owing to its form, the meniscus condenserwill intercept and utilize a larger percentage of light ray from the arc than the piano,which means that more light will be transmitted to the film, when a meniscus condenser isused. The meniscus, however,…
Electrical engineering
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