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*From*: David Bowman <David_Bowman@GEORGETOWNCOLLEGE.EDU>*Date*: Fri, 16 Feb 2001 11:16:31 -0500

If anyone really wants to consider the case of a 2-conductor confocal

oblate spheroidal capacitor (whose conductors are equal/oppositely

charged) it can be easily be found by superposition using the 1-conductor

solution. Suppose that the two confocal oblate spheroids have a common

focal circle of radius R, that the inner conducting surface has an

eccentricity e_i, and that the outer conducting surface has an

eccentricity e_o, then the capacitance of this capacitor is:

C = 4*[pi]*[epsilon]_0*R/(arcsin(e_i) - arcsin(e_o))

David Bowman

David_Bowman@georgetowncollege.edu

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