The axial dipole moment of two intersecting spheres of equal radii

The use of a finite number of image charges to solve electrostatic problems associated with two conducting spheres intersecting at an angle of pi/n (n an integer) has been known for over a century. If, however, only spheres of equal radii are considered, it is possible to extend the permissible angles of intersection to 2pi/n.

This condition is discussed with reference to the evaluation of the axial dipole moment. Journal of Applied Physics is copyrighted by The American Institute of Physics.