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 628
ving parts and of high frequency,so that the needle system can follow the changes in the alternatingcurrents. A galvanometer with a high frequency needle system,so that its deflections show the variations in alternating currents. OSCILLOGRAPHS. 609 is an oscillograph. Fig. 470 shows… … Fig. 469. Fig. 470. vibration. This is in the strong magnetic field and placed withthe plane of the loop parallel to the magnetic field. The stripis thus twisted by the magnetic forces when a current passesthrough the loop. The natural frequency of the loop is commonlyfrom 3,000 to 10,000…
Physics
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