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- · New York, T. Audel · leaf 38
magnet be rotated before a metal disc, thelatter had a tendency to follow the motion of the magnet, asshown in fig. 290, page 270 and also in fig. 1,056. This experi-ment led up to the discovery which was made by Arago in 1824,when he observed thatthe numberojoscillationsix.hich a magnetized -… … Fig. 1,557.—Explanation of Aragos rotations. Partof fig. L656 is here reproduced in plan. Far:, . n e xplanatkm of the phenomena of magnetism by rotation in a. :_rrents which by their electro-dynamic action, oppose - producing I Bdiaa ■ mechanically analogous to friction. In the figure, let AB be a…
Electrical engineering
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