Jim Kelley wrote:
So, now try to align that point of view with the fact that standing
waves are stationary - that current flows equally in both directions.

Are you aware that twice each cycle, the standing wave current is
zero at *every* point up and down the transmission line? If so, you
must be aware that the standing wave current changes directions
twice each cycle on each side of that zero state.

You need to run a diagnostic on that "logic analyzer" of yours. ;-)
It's giving you some bad readings on the available data.

An absolutely meaningless statement unless you are trying to create
a diversion away from the facts.

Profound. Note that I made no claim to the contrary.

Huh, you said that standing current waves stand still. Got news for
you, Jim. Standing wave current doesn't stand still. Standing current
waves reverse direction every 1/2 cycle. Take a look for yourself
with an o'scope.

Did you understand anything I wrote?

Yes, I understand that you have been seduced by your AC math model based
on a DC model. For all AC waves, including standing waves, the current
flows in the opposite directions every 1/2 cycle. I am amazed that a
physics prof doesn't understand that simple fact of physics.

Take a rope, run it through a pulley, and hold one end in each hand.
Pull on one end. The other end pulls on your other hand. That's the
way AC works. AC current reverses direction every 1/2 cycle.

:-) The plot you made on your web page shows the current flow *AT*
every position along two 1/4 wave radiators.

That's a snapshot, Jim, given by EZNEC, referenced to the source. The
current obviously changes direction and phase every 1/2 cycle in real
time. Have you never observed standing waves on an o'scope? They look
like a kid's jump rope, changing direction every 1/2 cycle. The difference
is that 'up' on the jump rope equates to 'toward the load' on a transmission
line.
--
73, Cecil http://www.qsl.net/w5dxp



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