On Apr 2, 7:35 pm, (Richard Harrison) wrote:
Jim Kelley wrote:

"The error I find is in your notion that virtual shorts and opens
cause reflections, and that real reflection coefficients may be
calculated from virtual impedances."


I have no problem with "virtual shorts and opens". We so called them and
used them in school when I was there over a half century ago.

Examine RADAR TR and anti-TR circuits for examples of virtual shorts and
opens which automatically route the energy to the right places and keep
it out of the wrong places.

Best regards. Richard Harrison, KB5WZI

Hi Richard,

If I gave the impression that I have a problem with virtual, or
effective impedances then I apollogize. I tried to make it clear that
the only problem is in improperly attributing cause and effect. While
I am not familiar with RADAR TR or anti-TR, I am quite sure that it is
subject to the same physical laws as any other technology.
Electromagnetic waves reflect only from real physical boundaries. JC
Maxwell took great care to describe exactly how that works. If you
feel that RADAR is somehow exempt from these physical laws, then this
might be an opportunity for us both to review our understanding of the
technology.

Best Regards,
Jim AC6XG