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 629
espond to the vibrations of the transmitter plate. The electriccurrents induced in the above cases are very feeble, and can trans-mit sounds only short distances. For longer distances, the micro-phone described in the next section is used as a transmitter. 700. The Microphone. The microphone…
Physics
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![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher04nati-65-32.webp)
