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 58
ide the two upright lines are known ascross magnetizing turns, and those lying inside, as demagnetizingturns. 270 HAWKINS ELECTRICITY The breadth of the belt of demagnetizing turns included betweenthe two upright lines is clearly proportional to the angle of lead; there-fore, the demagnetizing… … Pig. 290.—Aragos experiment illustrating eddy currents. Arago found that if a copper discDe rotated in its own plane underneath a compass needle, the needle was dragged aroundas by some invisible friction. The explanation of this phenomenon, known as Aragosrotations, is due to Faraday, who…
Electrical engineering
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