The elements of dynamic electricity and magnetism (1903)
Atkinson, Philip. [from old catalog] · New York, D. Van Nostrand company · leaf 138
with the measurement of angles, Dyreference to Fig. 45. Let the line NS represent the needle in the plane ofthe magnetic meridian, poised at its center C, so that itcan be rotated by the deflecting force into the positionWE^ or any intermediate position ; the force acting onits north pole, N,… … Fig. 45. effective component on the north pole, when in theposition AR^ being represented by the line /C, whilethe remainder acts along the needles length, and is notrepresented by the angle of deflection ; a similar resultbeing true of the deflective force on the south pole ;hence the effective…
Electricity · Magnetism
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