Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 560
c currents by means of magnets should bepossible. Faraday succeeded in solving this interesting problem in Novem-ber, 1831, and one of his earliest, simplest, and most convincing experi- 5o8 ELECTRICITY. ments for the demonstration of the production of electricity by a niagnetis represented in Fig.… … Fig. 270.—Magneto-electric Spark. end is bent, as shown at D, so that it is in contact with the disc, but press-ing so lightly against it that any abrupt movement of the bar causes thepoint of the wire and the disc to separate. When the bar is allowed tofall upon the poles of the magnet, the…
Inventions
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