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 396
he point when it begins to redden; from thispoint to that of white heat its resistance continues to decrease,but at a slower rate. This is just the reverse of the behavior of almost all other conductorsof electricity. The ordinary carbon filament when raised to its work-ing temperature has about… … AMCHOREDFILAMENT
Electrical engineering
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