Jim Kelley wrote:
Personally, I think some actual measurements would help enormously in
formulating/evaluating a model. Otherwise all we have is hand waving
and proselytizing.

I have reported my 25 nS actual measurements
using my dual-trace 100 MHz o'scope.

I assume that your physics lab has the ability
to perform such a simple measurement. May I
suggest that you simply perform the experiment
and report the results - or get one of your
students to do it.

I suspect that others have done such experiments,
measured what I measured, and are withholding the
results for obvious reasons.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com