Advanced theory of electricity and magnetism, a text-book for colleges and technical schools (1915)
Franklin, William S. (William Suddards), 1863-1930, MacNutt, Barry, 1878-1936, joint author · New York, The Macmillan company; London, Macmillan & co., ltd. · leaf 23
agnet issuspended, as shown in Fig. 13, at theplace where the value of H is to be de-termined, and set vibrating through asmall amplitude about the suspending fiberas an axis; and the time t of one com-plete vibration is observed. Then fromequation (3) of Art. 11 we have: silk fiber Fig. 13. = mlH… … ig magnet small magnet top view, Fig. 14. Second arrangement.—A very small magnet, ns, Fig. 14, issuspended by a fine silk fiber at the place occupied by the largebar magnet in the first arrangement. This small magnet ns, * Of course I is somewhat less than the length of the bar. ELEMENTARY THEORY…
Electricity · Magnetism
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