Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 158
/. Hence NPK=:^-tp. Therefore mR _ PK _ sin tpm/H~N^~ Bin (x(/-<p) sin^ or B=H … sin (v& - <p) Fig. 101. 93. Sine and Tangent Laws. We shall require touse these sine and tangent formulae frequently. It is desirablethat the student should realise that they depend merely onmechanical principles, and do not, except in the expressionfor B in terms of M and r, involve any…
Electricity · Magnetism
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