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Old June 8th 10, 03:27 AM posted to rec.radio.amateur.antenna
Cecil Moore Cecil Moore is offline
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First recorded activity by RadioBanter: Aug 2006
Posts: 572
Default Question about "Another look at reflections" article.

On Jun 6, 3:48*pm, Keith Dysart wrote:
You do seem to mention looking in the mirror quite frequently, as if
it had something to do with understanding the behaviour of a
transmission line.


Are you aware that visible light and RF waves are identical phenomena,
just at different frequencies? An RF transmission lines operates much
the same as fiber optics.

When I clip my instantaneous voltmeter across a line and measure
0 for all time, I can confidently say that no energy is flowing, for
there is not. I am curious as to what you would answer?


I have already answered. I agree with you that there is no NET energy
flowing across that boundary. All it means is that the forward
Poynting vector and reverse Poynting vector are of equal magnitudes.
The reflection coefficient at that zero voltage point is zero so
reflections are impossible. Yet, your concept requires a reflection at
every node - which violates the laws of physics. Until you eliminate
those magical metaphysical functions from your concepts, they are "of
limited utility", to quote Hecht.

Again, you are saying that there is zero traffic on the Golden Gate
Bridge because the northbound vehicles equal the southbound vehicles.
There is zero NET traffic, but such information is worthless. Someone
still has to repair the bridge.
--
73, Cecil, w5dxp.com