f S^ continued, which is equi-distant from the lip (so that D and the middle point of theconducting surface S^ are the two poles of the circle constitut-ing the lip); DKP^L the circle in which S, and the con-tinuation of its spherical surface, are cut by the plane throughD, Q, and any point P of… … point, Q; in the other, S is plane. Using now for S all thenotation of §§ 240, 241, but with accents added, and takingadvantage of § 238, footnote, we see that 188 Distribution of Electricity on Circular [xv. a^-r^=KP.PLand f-a=^DK^=DL = DK. DL. Hence (19) becomes , r f /DK.DL . . /DK.DLX ,^.. for…
Electricity · Magnetism
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