Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 889
gneti-sation. Electromagnets have thehorse-shoe form, as shown in fig. 839,and a copper wire, co\ered with silk orcotton, is rolled several times rounilthem on the two branches so as to form two bobbins, A and B. In order _ ^^ that the two ends of the horse-shoe i^- kv„u u _ may be of opposite… … ^ftllUljiJ* 864 Dynamical Electricity. [883- Electromagnets, instead of being made in one piece, are constructed oftwo cylinders firmly screwed to a stout piece of the same metal. Such arethe electromagnets in Morses telegraph (889) and the electromagnetic motor(899). The helices on them must be…
Physics
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