Notes on electricity and magnetism. designed as a companion to Silvanus P. Thompson's Elementary lessons (1891)
Murdock, J. B. (Joseph Ballard), 1851-1931, Thomson, Silvanus Phillips, 1851-1916 · New York, Macmillan & Co. · leaf 90
to magnetize it in oppo-site directions, but the resist-ances and number of turns in . . Fisr. 22 the two circuits are so propor- tioned that the magnetic field due to the low resistance branchis the stronger, and the armature F is therefore attracted, lift-ing the upper carbon and establishing the… … 78 NOTES ON The field due to the shunt is therefore strengthened and thatdue to the coarse wire diminished, allowing the armature F tofall slightly, bringing the carbons nearer together. By the de-vice of the two opposing fields, due to the coils on C beingwound in opposite directions, the feeding…
Electricity · Magnetism
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