Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 582
INDUCTION BY ELECTRIC CURRENTS. 559 By increasing the speed of the disk, or reducing the rateof vibration of the interrupter, the disk appears to set up aslow retrograde motion. By decreasing the speed of thedisk, it appears to move slowly forward. A speed may be reached at which the two series… … Gas Pistol. another speed the central series rotates while the outerseries stands still, and the black spots turn in orbits of theirown at the ends of the stationary bars. A Leyden jar being placed on an insulated table, K (Fig.536), and having its inner and outer coatings connected withthe poles…
Physics · Lantern projection · Electric apparatus and appliances
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