Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 411
ly (299, 300), the part of the plate on the leftbecomes the seat of closed currents circulating like the hands ofa watch, and the- part on the right the seat of closed currentscirculating in the opposite direction, as indicated in the figure.The former are equivalent to a number of magnetic shells… … KlG. 272. netic shells) and the fi.xed pole are such as to oppose the existing motion of the plate. The experiment may be easily made by means of a disc whichis made to rotate between the poles ofan electromagnet (Fig. 273). The disc,which before the passage of the cur-rent turns easily, offers a…
Electricity · Magnetism
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