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 372
andescent vapor of which gives a highlyluminous spectrum; or by employing electrodes of such refrac-tory material as will give a very high arc temperature, bythe effects of which certain materials carried by the positive ELECTRIC LIGHTING 2,463 electrode will be converted into incandescent vapor of… … PositiveTerminal Grounded to Case Croundedto Case
Electrical engineering
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