On Apr 18, 3:58*am, "Calltrex" wrote:
"Cecil Moore" *wrote the message

* * * * * the antenna must be reactive ! *From your explanation at 180
degrees, why doesn't
* * * * * current at the right side flip over then ? *Should be.

When all the voltages and currents are either in phase or
180 degrees out of phase, the resulting impedance is purely
resistive. There is *no reactance* in an ideal resonant dipole!
--
73, Cecil, IEEE.

I agree that the antenna is a chain of different pure resistances. But that
doesn't explain the asymmetric 'snapshot' here.
At the left side we see '+' voltage and '+' current and
at the right side we see '-' voltage and '+' current ! Why should it be asymmetric?
When i put a car battery with the plus on a lamp i will see a minus current ??

Never the twain will meet !
What you are debating is the difference between resonance relative to
Earth and that relative to the Cosmos. Thus, according to Einstein, it
is a case of relativity or viewing point. Laws of Newton refer to
equilibrium where all forces are accounted for and balanced thus for
cosmic resonance the "period" or the full wavelength is the true
balance. Thus when dealing with science or the cosmos half a period or
a halfwave
the position is indeterminate. ( Simple relativity my dear Watson!)
Art