Jim Kelley wrote:
Cecil Moore wrote:
Jim Kelley wrote:

If I had to give it a name I guess I'd call it an anti-reflection.


That's looking forward into a Z0-match from the source
side. The opposite thing happens looking back into a
Z0-match from the load side. What's the opposite of
an anti-reflection?

Actually, in my energy analysis article, I defined
the word, "re-reflection", as used in the article
and as used by Walter Maxwell in "Reflections".

Cecil,

Where you go wrong is your energy analysis. Your argument goes awry in
at least a couple of areas. 1. 'destructive interference causes energy
to reverse direction.' This is purely false. Interference is the
description we give to the result of the superposition of waves. It is
not a causal phenomenon. 2. Unless you're talking photochromic
properties, partially reflective media interfaces do not become 100%
reflective in response to illumination (or for any other reason). Any
"re-reflection" that takes place is ordinary partial reflection in the
other direction.

Jim, when I get back from my trip, I'll tell you about temporary
benign interference Vs permanent active interference. A standing
wave in a constant Z0 environment is temporary interference.
Wave cancellation is permanent active interference. When wave
cancellation occurs, the energy and momentum are redirected. In
a transmission line, there are only two directions. In the direction
of the wave cancellation and in the opposite direction. The energy
doesn't go in the direction of wave cancellation so which direction
does it go. Boy, that's a tough question, isn't it?

Have fun on the hog. Last weekend I was fortunate enough to drive 20
laps on a 1/2 mile banked track in a Busch class stock car. Holy cow.

Back when I lived in CA, in between motorcycle races, they opened
Laguna Seca to anyone with a motorcycle license, street legal bike,
$20, and willing to sign a waiver. Everyone was a certain number
of minutes apart. I got my Kawi Z1-B up to about 135 mph on the
straightaway. And that still wasn't top speed. That machine red-
lined at 60 mph in *first gear* with four more gears to go. :-0
--
73, Cecil http://www.w5dxp.com