Advanced theory of electricity and magnetism; A text-book for colleges and technical schools (1915)
Franklin, William S. (William Suddards), 1863-1930, MacNutt, Barry, 1878-1936. joint author · New York, Macmillan · leaf 190
(5) For a series of constant values of V this equation becomesthe equation of a series of circles as shown in Fig. 118. Thesecircles represent a series of cylindrical surfaces at right anglesto the plane of the paper. These cylindrical surfaces are equi-potential surfaces. The lines of force of the… … Fig. 118.
Electricity · Magnetism
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