Electrodynamics of continuous media

angle anisotropy atoms averaging axes axis boundary condition calculated charge circuit co-ordinates coefficient components conducting conductor constant corresponding cross-section crystal Curie point curl H current density cylinder denote depends derivative determined dielectric permeability differentiating diffraction dipole direction discontinuity distance effect electric field electromagnetic electrons electrostatic ellipsoid entropy expression external field external magnetic field ferroelectric ferromagnetic fluctuations fluid flux force formula free energy frequency function given gives grad Hence induction integral integrand isotropic Laplace's equation large compared layer Let us consider linear macroscopic magnetic field magnetisation magnitude Maxwell's equations medium metal normal obtain optical particle perpendicular phase piezoelectric plane polarisation PROBLEM propagation properties pyroelectric quantities radius refraction relation respect result rotation satisfies scalar scattering self-inductance SOLUTION sphere suffixes superconducting surface symmetry tangential temperature theory thermodynamic potential tion uniform unit volume upper half-plane vacuum values variable velocity wave vector wire z-axis zero