Jim Kelley wrote:
Try to keep
your mind focussed on the fact that we're discussing the steady state.

If one wants to know where the energy in the transmission
line came from, one must consider the initial transient
state. Let's take a simple example like the one W7EL uses
in his food for thought #1, a simple stub, except let's
make it one second long and lossless.

100W------one second long lossless feedline------open

During the first two seconds, the source pours 200
joules into the stub. After two seconds, steady-state
is reached and there is no net transfer of energy in
either direction at the source. Where are the 200 joules
that were sourced and not dissipated?
--
73, Cecil http://www.qsl.net/w5dxp