Gene Fuller wrote:
Cecil Moore wrote:

Cecil,

Waves are useful. However, they are not living objects. They have no
will to survive. There is nothing in the standard E&M science based on
Maxwell's laws that requires waves to be "canceled" if they no longer
exist. There is no conservation law of wave-ality.

If the proper equations are set up and the proper boundary conditions
are applied (not always easy to do), then waves will exist where they
are needed to describe the physical reality and they will not exist
where they are not needed.

There is no need to worry about waves that don't exist.

As for the "nonsense", we had this discussion a few times, including a
couple of months ago. I don't feel like finding the exact messages, but
the gist was something like:

"Wave 4 and wave 5 return toward the source from a match point, but they
are opposite phase and therefore cancel after a short journey."

If you don't recognize that exchange, let's just drop it.

73,
Gene
W4SZ

Hi Gene,

Yes. The short journey was described by the term "dt". According to
Cecil, that is the amount of time after energy is reflected and before
it 'turns around and goes the other way as it is required to do by the
law of conservation of energy'. You may recall that it is forced to
go the other way 'because there are only two directions in a
transmission line'.

73, ac6xg