The mathematical theory of electricity and magnetism (1911)
Jeans, James Hopwood, Sir, 1877-1946 · Cambridge [Eng.] : University Press · leaf 199
— f cos 6) \ f J dVdr (,.. +/2 _ 2fr cos ey^ ( w 2 ^ /• cos 6 j Putting r = a we obtain e f a—fcos6 a^f^— a^f cos 6 4^ l(a +/^ - 2fa cos ^)2 (a^^ + a - 2af cos ^)t ^^ V+/-2/acos^)ti 47r a.>SfQ^ • Thus the surface-density varies inversely as SQ^, so that it is greatest atC and falls off… … Fig. 62. 214-216] Images 191 be the total strength of the tubes ending on the image at ii if the conductorwere not present. Figure 62 shews the lines of force when the strength of the image is aquarter of that of the original charge, so that /= 4a. It is obtained fromfig. 19 by replacing the…
Electricity · Magnetism
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