lda0 1[m] "Wavelength, vacuum"
f0 c_const/lda0 Frequency
e_a 1 "Relative permittivity, vacuum"
mu_a 1 "Relative permeability, vacuum"
e_b -1 "Relative permittivity, metamaterial"
mu_b -1 "Relative permeability, metamaterial"
n_a sqrt(e_a*mu_a) "Refractive index, vacuum"
n_b -sqrt(e_b*mu_b) "Refractive index, metamaterial"
alpha 30[deg] "Angle of incidence"