The telephone: an account of the phenomena of electricity, magnetism, and sound, as involved in its action (1877)
Dolbear, A[mos] E[merson], 1837- [from old catalog] · Boston, Lee & Shepard; New York, C. T. Dillingham · leaf 61
spiral, they would sepa-rate rapidly. Applying this conception to a mag-net, we might suppose that such spiral motionswill be set up in the ether by the magnet, and 56 THE TELEPHONE. that such motions re-acting upon ordinary mat-ter affect it as attraction and repulsion; and thuswe should have at… … FIG. 5. suffice. No rotation of a magnet upon its ownaxis can produce any effects upon a currentthat is exterior to it; but if a loop of wire bekept stationary adjacent to a magnet, as in Fig.5, while the magnet revolves, a current of elec-tricity is produced; and if the magnet be keptstationary,…
Telephone
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