On Apr 9, 10:02*pm, Cecil Moore wrote:
Keith Dysart wrote:
The voltage distribution on the line, the current
distribution on the line and the energy distribution
on the line has not changed one iota.

In one case the wave energy changes direction and
momentum at the physical discontinuity. In the
other case, there exists nothing to change the
wave direction and momentum.

As I expected, you claim that the situations are
*completely* different. And yet the voltage, current
and energy distributions are identical. There are
no observable differences. And yet you claim they
are *completely* different. And yet there are no
observable differences. And yet....

Tis a puzzle, isn't it.

And we know from circuit theory that we can cut
a conductor carrying no current without affecting
the circuit. Why should it be different here?

This new physical impedance discontinuity has not
had any observable effect. All it seems to change
is the reflection of the unobservable forward and
reflected waves.

Yes, exactly in agreement with the laws of physics.

At least with your interpretation of the laws.

But the voltage distribution on the line, the current
distribution on the line and the energy distribution
on the line has not changed one iota.

Please present your new laws of physics that allow
EM waves to reflect off of EM waves in the complete
absence of a physical discontinuity.

Again, not my claim. But using your previous approach
for analysis, perhaps we should insert a zero length
line of the appropriate impedance to provide the cause
for the reflection, if you insist on a reflection.

And please
demonstrate such in free space so we can see the
results.

...Keith