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Old August 14th 05, 04:34 AM
Cecil Moore
 
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Richard Clark wrote:
Cecil Moore wrote:
some people use that exact same argument to try to prove
that no current is flowing in the middle of a transmission line


Or uncanceled reflections brighter than the sun are black.


In a lossless system sourced by monochromatic
coherent light, if the 1st medium is air and if the
index of refraction of the 3rd medium is the square of
the index of refraction of the 1/4WL 2nd medium, then
all reflections are canceled in the 1st medium. That's
one of the rules of optics for non-reflective coatings.
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73, Cecil http://www.qsl.net/w5dxp

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Old August 14th 05, 06:01 AM
Richard Clark
 
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On Sat, 13 Aug 2005 22:34:38 -0500, Cecil Moore
wrote:
then all reflections are canceled in the 1st medium

"all," of course, if you discard precision to force the theory to fit
the expectations.
About as respectable as E = M · C² ±3dB
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Old August 14th 05, 01:23 PM
Cecil Moore
 
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Richard Clark wrote:
Cecil Moore wrote:
then all reflections are canceled in the 1st medium


"all," of course, if you discard precision to force the theory to fit
the expectations.
About as respectable as E = M · C² ±3dB


Given an ideal system with carefully selected boundary conditions,
all reflections are canceled. That is a concept, not something
that can be achieved in reality. Your height and weight on your
driver's license is not 100% accurate either but it is good
enough for government work.
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73, Cecil http://www.qsl.net/w5dxp


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Old August 14th 05, 03:54 PM
Richard Clark
 
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On Sun, 14 Aug 2005 07:23:56 -0500, Cecil Moore
wrote:
Your height and weight

±3dB? All the expectation of a Dr. Atkins diet.
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