Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 466
Fig. 304. 442 GALVANOMETERS [360 … The effect of the earth may be compensated by that of a magnetwhich produces in the place occupied by the needle a sensibly uni-form field in the opposite direction to that ofthe earth. This magnet, which is called thecotnpensatinri or adjusting magnet, is usually^jj supported on a rod (Fig. 305),…
Electricity · Magnetism
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