Example image of eyePlorer eyePlorer map for 'Electromagnetic wave equation': Electromagnetic radiation Optical medium Partial differential equation Vacuum Electric field Homogeneity Laplace operator Magnetic field Speed of light Free space Maxwell's equations Ampere Charge conservation Coulomb Divergence theorem Ampère's circuital law Stokes' theorem Kirchhoff's circuit laws Displacement current Gauss's law A dynamical theory of the electromagnetic field Faraday's law of induction Covariance and contravariance Covariant formulation of classical electromagnetism Electromagnetic four-potential Lorenz gauge condition D'Alembert operator Covariant derivative Ricci curvature Angular frequency Superposition principle Wave vector Sine wave Dispersion relation Wavelength Wavenumber Euler's formula Frequency Hertz Radian per second Polarization Trigonometric functions Phase angle Electromagnetic spectrum Cosmic microwave background radiation Photon dynamics in the double-slit experiment Theoretical and experimental justification for the Schrödinger equation Lev Landau John Archibald Wheeler Kip Thorne