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 130
r a magnet, it will point in some fixed direction dependingon the proximity of the poles of the magnet. The direction taken by the magnet is calledthe direction of the force at the point, and if the suspended needle be moved forward inthe direction of the pole, it will trace out a curved line which… … Fig. 110.—Magnetic action: Unlike poles of magnets attract each other.
Electrical engineering
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