Cecil Moore wrote:
John Popelish wrote:

Cecil Moore wrote:

I agree, unless you use phase measurement to hunt for the location of
the current nodes that have moved as a result of adding the coil.
Finding a phase reversal at opposite ends of the coil, for instance,
implies that an odd number of nodes reside in the coil.


John, I didn't say the amplitude couldn't be used to determine
phase. The current nodes are associated wiht amplitudes, not phase.

If you can measure phase, you can see that it is opposite on opposite
sides of a node. There is a 180 degree phase shift each time the
measurement passes over a node. Do you disagree?

A phasor rotates at the reference frequency, and with a phase angle
that represents the angular difference between the value in question
and the reference cycle. Pick a point on the conductor, and if it
carries either a standing or traveling wave (or any combination of
traveling waves at the reference frequency), the current at that point
is describable as a phasor (having a specific magnitude, and a
specific phase with respect to the reference cycle).


Yes, but the standing wave phasor doesn't change phase with position.
The traveling wave phasors change phase with position. That's a big
difference.

That's exactly the difference. But if you measure a single point, you
can't tell whether you are measuring a point on a traveling wave or a
standing wave. Agree?

No. Currents do not travel. Current is the movement of charge past a
point.


So current doesn't flow and all the references to "current flow" are
wrong?

Afraid so. The concept of current already includes the concept of
flow. Current is charge flow. Current flow is charge flow flow??

If so, your task is a lot bigger than mine. May I suggest a
new thread titled, "Current Doesn't Flow".

I wonder how long that thread would "flow".