Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 610
10° This arrangement made the first dynamo-electric machine. Forbesand others have attempted to use this as a model for commercialelectric generators, but the E, M. F., with any practical diametersand speeds is too small for industrial uses. 682. Foucault or Eddy Currents. It was observed a… … Fig. 437. netic needle suspended over a rotating copper disk, rotates withthe disk (Fig. 437). Both the damping of the needle, and Aragosdisk experiment were explained by Faraday as phenomena ofelectro-magnetic induction. The relative motion of the magnetand the disk induces an E. M. F. in the…
Physics
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