The mathematical theory of electricity and magnetism (1911)
Jeans, James Hopwood, Sir, 1877-1946 · Cambridge [Eng.] : University Press · leaf 79
Q,Pthese forces hardly contribute anything to theresultant intensity at P. Owing to the greater distance of the point P,the forces from given elements of the plane aresmaller at P than at P, but have to be resolvedthrough a smaller angle. The forces from theregions near Q are greatly diminished… … Fig. 29.
Electricity · Magnetism
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