Keith Dysart wrote:


It takes many more reflections of reflections before the
impedance at the input starts to look like a short.

An excellent point, Keith. And applications for it abound.

Problem is that it conflicts with the predictions made by the power
propagation model. (The politically correct name is the Joules/sec
propagation model.) That model shows that only a single reflection of
power is needed to explain the whole thing. Of course in some cases
the wave of power has to figure out how to turn around and go back the
other direction after it's been cancelled in order to conserve energy.
(A problem it wouldn't have to solve had it not violated it in the
first place.) Admittedly, some of the details have yet to be worked
out. :-)

73, ac6xg