Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 410
ine in whichthe field magnets consist of two sets of electromagnets. Theends of the axes of each set are arranged in a circle, the axesthemselves being perpendicular to the plane of the circle andthe poles being alternately positive and negative. The twoseries of poles are placed with their planes… … Fi>. 254. of force; and the lines of force will run alternately to rightand left. The armature revolves in the gap between the two series of 245-247] ELECTROMAGNETIC INDUCTION 40i magnets. It consists of a series of coils, the same in numberas the magnets, placed round the circumference of a…
Electricity · Magnetism
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