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 114
llows; 94 HAWKINS ELECTRICITY 1. The Thermal effect:— The conductor along which the current flows becomes heated. Therise of temperature may be small or great according to circumstances,but some heat is always produced. 2. The Magnetic effect; The space both outside and inside the substance of the… … Fig. 87.—Lenzs apparatus for measuring the heat given off by an electric current. It consistedof a wide mouthed stoppered bottle fixed upside down, with its stopper, b in a woodenbox; the stopper was perforated so as to give passage to two thick platinum wires, connectedat one end with binding…
Electrical engineering
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