Keith Dysart wrote:
And yet I commonly see discussion of current in transmission
lines.

RF current is a *result* of the H-field in the EM
wave. There are photons involved making it different
from DC. Electrons may (or may not) "bounce" off of
each other but photons traveling in opposite directions
in a transmission line do not and cannot "bounce" off
of each other. They pass each other like ships in the
night. Any theory based on photons "bouncing" off of
each other while traveling in opposite directions, is
inaccurate and doomed to failure. Simply applying the
scientific method will remedy the problem.
--
73, Cecil http://www.w5dxp.com