Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 74
its own distance, r, from the point, and determining the value of the integral /__: for the whole. As a special case, suppose a quantity of positive electricity, Q,concentrated at a point, a (Fig. 26), and a quantity Q at a ; the 37] EQUIPOTENTIAL SURFACES 51 potential at any point, P, whose… … Fig. 26. about the line aa as an axis, and Fig. 26 represents a section bya plane through the axis of a system of equipotential surfacescorresponding to the values (2= +20 and Q! - -5, the potentialsof consecutive sur-faces differing byunity from eachother. The surfacegiven by the equa-tion ■)• ror…
Electricity · Magnetism
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