Jim Kelley wrote:

Cecil Moore wrote:
Exactly! So what does cause the reflection of reflected energy
at the match point? We know it happens and you have given us
no clue as to why it happens.

I assumed you knew. Reflection is caused when a wave encounters a
change in media of some kind.

What I am asserting and you haven't even come close to disproving is
that wave cancellation of RF waves can cause reflections in exactly
the same way as wave cancellation of light waves has been proven
to cause reflections. What is it about the two following two
technical reference quotes that you don't understand? Oh, now
I remember. Your argument is that words don't mean what words
mean. With that argument you can disprove anything.

www.mellesgriot.com/products/optics/oc_2_1.htm

"Clearly, if the wavelength of the incident light and the thickness
of the film are such that a phase difference exists between reflections
of p, then reflected wavefronts interfere destructively, and overall
reflected intensity is a minimum. If the two reflections are of equal
amplitude, then this amplitude (and hence intensity) minimum will be
zero."

"In the absence of absorption or scatter, the principle of conservation
of energy indicates all 'lost' reflected intensity will appear as
enhanced intensity in the transmitted beam. The sum of the reflected and
transmitted beam intensities is always equal to the incident intensity.
This important fact has been confirmed experimentally."

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."

That's as clear as it can possibly be, Jim. Wave cancellation redistributes
the energy. In a transmission line, if energy is redistributed, it must
necessarily change directions. Would you believe there are only two
directions available in a transmission line? If not, please prove it.
--
73, Cecil http://www.qsl.net/w5dxp

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