An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 617
550 ELECTRICITY AND MAGNETISM … Fig. 401. —Silicon de-tector. A slight tap causes the resistance of the coherer to return to its original high value ; that is, to decohere. The microphone, described in section 354, is an excellent wave detector. Another form, called a crystal detector (Fig.401), consists of a piece of silicon, or…
Electricity · Magnetism
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