Cecil Moore wrote:
Jim Kelley wrote:

It's also arguable whether any energy is transferred from a source to
a lossless, open circuited, 1/2 wave transmission line after the
transient period.


Use a signal generator with a circulator load as the source. Cause a
noise glitch on the source signal. When will you see the glitch
across the circulator resistor? One cycle later. Reckon where that
glitch went during that one cycle? Man, that's a tough question. :-)

I notice you opted to use the word 'glitch' rather than 'transient'. :-)

ac6xg