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 464
curient shouldbe uniform. By this apparatus current-strengths greater than Hjir cannotbe measured. 359. Shape of the Coil.—In many galvanometers, no attempt ismade to calculate the constant Gdirectly ; sensitiveness is the onlycharacter looked to. This is greateraccording as the value of tan«… … Fig. 303. radius a is 27r the length of wire being liva, the field due to unit-length of the wire, or the specific effect, is — , and therefore or varies inversely as the square of the Iadius. We are thus led todiminish as much as possible the radius of the windings and there-fore the length of the…
Electricity · Magnetism
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