I think the steady state solution would be a lot more palatable if the
analysis started at T=0, when you turn the source on. The extra step of
seeing how you reach steady state makes the latter more "real". One could
almost be convinced that there are no reflections in the steady state;
problem is , there would be no other explanation for standing waves, and I
can measure them with unambiguous instruments.

Tam/WB2TT