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
tic field is made. This damping action of eddy currents isoften taken advantage of in DArsonval ormovable coil galvanometers (§629), to bringthe moving coil to rest quickly. The coil iswound on a closed copper frame in whichthe eddy currents are generated during thevibration. The coil itself is… … Fig. 438. 39 592 ELECTROMAGNETIC INDUCTION. independently about 1832, that there is a bright spark when acurrent is broken in a circuit containing an electro-magnet. Onmaking a current in the same circuit, there is no such spark.This extra current at break was noticed by persons receiving ashock…
Physics
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