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 376
TRIC LIGHTING 2,467 lamp, both carbons arfe provided with cores of calcium salts.In the former the efficiency of light production depends uponthe temperature of the positive electrode which controls thevaporization of the luminescing material. If the amount of carbon in the positive electrode be… … PLUNGER DISK ELECTRODEHOLDER Pig. 3,392.—Lower mechanism, of Beck flaming arc lamp, showing electrode holders, feed. stop, plunger disc and electrode guide frame. The electrodes of these lamps are placed, usually, in a convey-ing position pointing downward, and the arc is sprung by meansof a…
Electrical engineering
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