Re: Displacement Current Demonstration


"Bill Miller" <BillMillerKT4YE@xxxxxxxxxxxxxxxx> wrote
news:nuyKh.84540$as2.61412@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hello and thanks for the comment...

Classical analyses of capacitors are often done in a vacuum. The
permittivity of a vacuum is completely linear, as near as we can tell.

When we introduce a non-vacuum dielectric material, we often find that
physical dielectrics exhibit hysteresis.

But that hysteresis may be caused by polarisation or by the surface (or
volume if time is long) charging or the both of them. Some electres do not
exhibit polarisation but only volume charge. Can the dipole rotate in cold
solid body?

I *think* that Maxwell, when he was looking at data prior to his
innovation of *Displacement Current* may have noted this hysteresis, and
that may have prompeted him tho think that something in the dielectric was
being "displaced." He then extended this thought from physical dielectrics
to vacuum dielectric. We have gone *downhill* since then!

I understand that this thought was an error.(I have not long hair
dictionary).
S*


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