The Power and Beauty of Electromagnetic Fields
By Frederic R. Morgenthaler
Chapter 18
Page 272
"conductors merely provide a path for the
charge distribution to zip along"
by. This creates the
surface charges that are needed in order to originate and terminate the
electric field. As the pulse moves on (at or near the speed of light), those
charges move back into the metal and different charges further down the line
repeat the action to produce new surface charge as required. [This is the Southerner
view. – I Catt] Simply put, the same charge does not travel with the wave,
but the distribution as a whole acts as if it did. The macroscopic Maxwell
Equations cannot, of course, distinguish between the individual charges. ....
If no (and consequently rho) approach
infinity, .... .... The result is
dispersion-free propagation.