Derivation of the Wave Speed

[wave eqn]

The first equation is the partial differential equation for the electric field that resulted from Maxwell's equations. The second equation above is the general form of the wave equation, where v is called the phase speed of the wave. Comparing the two equations and evaluating the phase speed for the electromagnetic wave:

[wave eqn]


"http://www.physics.udel.edu/~watson/phys208/wave-eqn4.html"
Last updated Dec. 9, 1997.
Copyright George Watson, Univ. of Delaware, 1997.