ER2 = fdtd_er_grid.dielectric_grid.repeat_interleave(2, dim=0).repeat_interleave(2, dim=1) UR2 = fdtd_ur_grid.dielectric_grid.repeat_interleave(2, dim=0).repeat ...

maxTime=((size/2)*np.sqrt(epsilon_1)-int(0.05*size)+delay)+max(2*source_width/np.sqrt(max(eps))*np.sqrt(epsilon_1),2*source_width/np.sqrt(max(eps))*np.sqrt(epsilon_2 ...