
%0 Journal Article
%A Ross, DK 
%T The Potential Due to Two Point Charges Each at the Centre of a Spherical Cavity and Embedded in a Dielectric Medium
%J Australian Journal of Physics
%D 1968/12/01
%V 21
%N 6
%P 817-822
%K 
%R https://doi.org/10.1071/PH680817
%U https://www.publish.csiro.au/paper/PH680817 
%X A method is found for determining the electrostatic potential due to two separated spherical cavities each containing a point charge with the whole system embedded in a continuous dielectric medium. The potential is obtained as a sum involving Legendre polynomials and it is shown that the coefficients of this series can be expanded as a convergent power series in the reciprocal of the distance between the centres of the cavities. This solution is suitable for numerical calculations because there is a simple relationship between successive terms in the series and because this series is convergent even at contact separation. 
