多极展开电象法

在电势多极展开的基础上，提出了一个利用电象法求解静电学问题的简便方法。利用适当的边界条件可求出象电荷的大小和所处的位置。就球和椭球对称等典型的静电学问题进行了计算，并对所得到的结果进行了讨论。

The method of the electrostatic images by multipole expansion

Based on the multipole expansion of the electrostatic potential, a simple method is proposed in this paper for solving some electrostatic problems treated by images. The magnitude and the location of the image charges are found by imposing the proper boundary conditions. Some typical Problems with spherical and with spheroidal symmetries are worked out, and the results are also discussed.