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 86
because one enters the surface andthe other leaves it; we shall takeoutward flux—that is to say, thatfor which the normal component isdirected to theoutside—as pos-itive. We havethen, D^^dS +DJS = 0. Allthe surface may Fig. 30. thus be cut into pairs of elements, the fluxes thiough which mutually… … 42] GAUSSS THEOREM 63 the outline of a surface for which this is not tiue; the suril^ of the elementary fluxes, which are always equal to each other and alternately of opposite signs, is still equal to nothing. Thus, the total flux which traverses a closed surface is zero when this flux proceeds…
Electricity · Magnetism
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