Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 562
ducting material, that the currents generated in the coils, although in■different directions as they approach a pole and recede from it, are never-theless made to flow in one direction in the external circuit. R R in thefigure represent two brass handles, which are grasped by a person wish-ing to… … Fig. 273.—Magneto-electric Light. ■can readily be produced by expenditure of mechanical effort in turning thehandle. The arrangement of the points for this purpose is shown in Fig.273, and we shall presently see what acv mtage has been drawn from thisexperiment on a great scale as a source of…
Inventions
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