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 412
ult, who first 5 j^ observed this, made the experi-ment in a very striking form.By means of a system of toothedwheels worked by a handle, astout disc of pure copper, d, ismade to rotate between thebranches, ab, of a powerfulelectromagnet (Fig. 276). As soon as the current passes,a considerable… … Fig. 276. 390 SPECIAL CASES OF INDUCTION [326 The term Foucault currents is applied to tlie induced currentsproduced in the core of an electromagnet whenever the strengthof the current in the surrounding wire varies. The heat which results from this cause is considerable whenthe wire is traversed…
Electricity · Magnetism
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