On Fri, 30 Jan 2009 11:00:43 -0500, Michael Coslo
wrote:

This question may have been asked before, but is there a physical
experiment that is good for verifying skin effect?

and then later on (following some rather arcane metaphysical
theories):

On Fri, 30 Jan 2009 16:06:47 -0500, Michael Coslo
wrote:

hmmm, interesting thought. I know where I can get a 8 foot threaded rod
of the same diameter as a solid rod. Maybe an experiment in the works.

Hi Mike,

Measure the DC resistance and compare to the rather simple formula
that exists in any textbook that Art has spit on. I bet the
measurement agrees with the computation to within several percent.

Measure the AC resistance at a suitably high frequency. How much is
it a portion of the DC resistance?

Measure the AC resistance at a suitably higher frequency. How much is
it a portion of the DC resistance? Does that portion equal the bulk
conductive volume of the thread alone? If not, raise the frequency
some more until it does.

The threaded rod is rather an elaborate red-herring because you can do
the same thing with smooth wire, rod, plate, tube - choose what you
will, the volume of conductivity will be indicated by the change in
resistance.

Want to prove it is conducting only on the exterior surface?
Substitute equal diameter tube for solid rod and perform the same
three measurements above. If current cannot return back down the
inside, Resistance should climb astronomically (say by bumping the DC
frequency to 0.0001 Hz?)

73's
Richard Clark, KB7QHC