Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 270
compound horse-sh )e magnet. E E arecoils containing cores of .soft iron con-nected by the back iinmiture, C C, thewhole constituting a sort of armatureto the permanent magnt. The brass axle, D D, is rigithy connectedwith the back-armature, C C, so that when the axle is rotated by meansof the… … 250 ELECTRICITr AND MAGNETISM. both helices. The wire that constitutes the helix is wound in oppositedirections around the two cores, so that the two currents may not flowin opposite directions through the wire, and thereby neutralize one an-other, but may have a common direction, and thereby…
Physics
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