A laboratory course in experimental physics (1896)
Loudon, W. J. (William James), McLennan, John Cunningham, joint author · New York and London, Macmillan and Co. · leaf 228
B is the meridian, CD the magnet, and 6 theangle of deviation. When, therefore, the current is passing and the magnet hascome to rest, this angle B should be noted; and if, when thecurrent is reversed, the magnet is deflected through the sameangle but on the other side of the meridian, the plane of… … Fig. 20. 2i4 EXPERIMENTAL PHYSICS. When the magnet is displaced, as in Fig. 21, it follows, bytaking moments about the point of suspension that, tt 7 ■ a 2 trulCn cos 6 Hft.1 sin 0 = — > a or C=^-tan0, (4) 2nir and since the right-hand member of this equation involves quan-tities which can be…
Physics
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