The Eikonal Equation as the Short-Wavelength Limit

Statement

Obtain the eikonal equation |grad S|^2 = n^2 by taking the lambda -> 0 asymptotic limit of the Helmholtz equation, defining rays as trajectories orthogonal to wavefronts.

Depends on

Optical Wave and Helmholtz Equations from Maxwell

Used by

PU-206/L03