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The Finite Difference Time Domain Method for Electromagnetics With MATLAB Simulations Atef Elshe

pi=3.141593 eps0=8.854000e-012 mu0=1.256637e-006 c=299792480.000000 
dx=4.233000e-004 dy=4.064000e-004 dx2=5.015855e+023 dy2=5.441693e+023 
dt=5.901700e-013 tau=1.694505e-011 t0=5.083516e-011 fmax=2.950713e+010