A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 806
necessary to holdthe magnet at right angles to a given field.Thus, the magnetic moment may also bedefined as the couple required to hold amagnet at right angles to a field of unit intensity. Couple acting on a magnet in any position. —If the magnet be inclined at an angle 6to the field H (Fig. 723)… … Fig. 723.—Couple noting on a magnet inclnetie field. ned to a mag- above, and when 0 = 0° the couple is zero, since sin0°=0. Hence, 782 MAGNETISM AND ELECTRICITY CHAP. the only position in which a freely suspended magnet is in equilibriumin a given field is when its direction is coincident with…
Physics
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