采用有限差分法对二维静电场的数值计算。用mathematica语言编的源程序。-using the finite difference method to two-dimensional electrostatic field of numerical calculation. Using Mathematica addendum to the source.

一维有限差分的fortran应用程序，适合计算电磁场。-one-dimensional finite-difference fortran application procedures for calculation of electromagnetic fields.

计算二维光子晶体带隙的源程序，用时域有限差分方法，对研究光子晶体的同行很有帮助阿