Art Unwin wrote:
Skin effect refers to current flow along the aluminum.

Actually, it is more complicated than that. Since
the current impulse travels at the speed of light,
the current impulse energy transfer necessarily involves
photons. Note there is no current impulse traveling at
the speed of light under steady-state DC conditions
which is the only kind of current being carried 100% by
electrons. Any current, e.g. RF current, traveling at
the speed of light, involves photons, even the DC impulse
current.

When you get to
the point when the impedance is zero it shows that all applied
current has been applied outside the aluminum which is now not
carrying ANY of the applied current. WOW!

It is true that one can set EZNEC to lossless conditions but
one cannot do that in the real world. Aluminum and copper
are only ever lossless at superconductor temperatures.

You also stated that applying a time varying field
is an example of typical failures! No idea where that comes from.

Me either since I don't remember anything about "typical
failures". What I said is that the electrons excited by
HF+ RF energy move hardly at all. It is akin to tossing
a stone into a still pond - the water molecules (carriers)
move hardly at all except up and down.

Another brou har ensued with the implication was that
both the upward and downward travels of the applied current was on the
same skin deep surfaces! Very wierd.

Again consider tossing a stone into a still pond. When the
waves reach the shore, they are reflected thus forming
standing waves on the water. Again the water molecules
move primarily up and down, moving hardly at all in the
direction of propagation of the forward and reflected waves.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com