Richard Clark wrote:
[Hecht rolls his eyes]

I'm going to trim and ignore the condescending ad hominem stuff.

... the math follows the physics, it does not create the physics.

Your argument has that exact flaw. "What Cecil is describing doesn't
exist in the common math model. Therefore, the math model prohibits
it from existing in physics." Please follow your own advice. There
is a vast gulf between being descriptive and being prohibitive.

There is a vast gulf between being descriptive and being proscriptive.

I didn't choose to quote the entire book, Richard. Hecht also says:
"If two or more electromagnetic waves arrive at point P out-of-phase
and cancel, 'What does that mean as far as their energy is concerned?'
Energy can be distributed, but it doesn’t cancel out. ... The
superposition of coherent waves generally has the effect of altering
the spatial distribution of the energy but not the total amount
(of energy) present."

"Altering the spatial distribution of the energy" in a transmission
line is a binary function since there are only two directions. If
the spatial distribution is altered, it necessarily changes directions.

The following does explicitly state a change in direction, i.e. "A
NEW DIRECTION".

http://micro.magnet.fsu.edu/primer/j...ons/index.html

"When two waves of equal amplitude and wavelength that are 180-degrees
out of phase with each other meet, they are not actually annihilated.
All of the photon energy present in these waves must somehow be
recovered or REDISTRIBUTED IN A NEW DIRECTION, according to the law
of energy conservation ... Instead, upon meeting, the photons are
redistributed to regions that permit constructive interference, so
the effect should be considered as a redistribution of light waves
and photon energy rather than the spontaneous construction or
destruction of light." (Emphasis mine.)

A transmission line has only two directions. If wave cancellation, i.e.
permanent destructive interference, takes place in one direction, the
necessary corresponding constructive interference must be "redistributed
in a new direction". In a transmission line, there is only one "new
direction", the opposite direction from the old direction.
--
73, Cecil http://www.qsl.net/w5dxp

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