The boundary conditions at the surface of a dielectric are given by
where D is the net electric field in the dielectric, is the unit normal, E is the imposed electric field, B is the imposed magnetic field, and H is the net magnetic field in the dielectric.
D, Dielectric Constant, Electric Permittivity, Electric Susceptibility, Ewald-Oseen Extinction Theorem, Fresnel Equations, H, Magnetic Permeability, Magnetic Susceptibility, Relative Permeability