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 71
above statement is equivalentto the equation „» A B (* 36. Difference of Potentials as depending on ElectricCharge.—Returning to the consideration of an electric field con-tained between two concentricconducting surfaces (Fig. 25),such as that referred to in (32),it is easy now to calculate… … K r- OP. If w very near the force there is is nearly equal to the force at p. take a point, p, in OP produced, 1 Q ,^.^, and The average electric force along pp is therefore very near to either of these values, and still more nearly equal to the intermediate value i_ a K 11- Adopt- ing this…
Electricity · Magnetism
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