Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 147
centrated, anda south pole S with - m units. Let 0 be the centre of the magnet, 21 its length, and letthe axis SN make an angle 6 with AOB, the direction of theforce //. Tiirough N and S draw LN and SK parallel to the direc-tion of H, and through 0 draw KOL perpendicular to AOB. Then the forces we… … Now 0L = 0Nsm6 = lsine, and OK =-0S sin 6 = 1 sin 6. Hence the moment required = 2mlH sin 0 = MH sin d, if M is the moment of the simple magnet. Now we may look upon any magnet as compounded of aseries of such simple magnets. The resultant action on eachof these will be a couple, hence the whole…
Electricity · Magnetism
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