Example image of eyePlorer eyePlorer map for 'WKB approximation': Old quantum theory Physics Quantum mechanics Semiclassical Gregor Wentzel Hendrik Anthony Kramers Léon Brillouin Harold Jeffreys Schrödinger equation Francesco Carlini George Green John Strutt, 3rd Baron Rayleigh Joseph Liouville Richard Gans Evanescent wave Oscillation Stationary point Potential energy Ansatz Asymptotic expansion Multiple-scale analysis Eikonal equation Generic scalar transport equation Action (physics) Classical mechanics Quantum tunnelling Airy function Method of steepest descent Slowly varying envelope approximation Langer correction LeRoy radius High frequency approximation Airy wave theory Singular perturbation Lagrangian Grassmannian Instanton Quantum reflection Supersymmetric quantum mechanics Ohmic contact Ballistic conduction Perturbation theory (quantum mechanics) BWK Wentzel WKB (disambiguation) Wavelength Scanning tunneling spectroscopy Supersymmetry Partial differential equation Wave Field electron emission