On Fri, 04 Dec 2009 07:04:28 -0500, Registered User
wrote:

Static comes in two flavors. One means "not moving." The other means
high potential (which can be "not moving" AND, ironically, "moving").
Such is the legacy of electrostatic potential covering DC to Gamma.

I was wondering about the latter as a possibility but couldn't find
the proper words. My interpretation is although the individual fields
may vary the total potential of the fields is constant. Is this
correct?

Electrostatic is properly applied to charge that is NOT moving, or
moving very slowly.

The same thing can be said of Magnetostatics as being derived from a
current that is constant, or altering very slowly.

The sense of either of these strict terms residing in the RF denotes
the poverty of idea that takes up residence here as invention. There
is plenty of examples to be found on the Web too. It is unfortunate,
like the camel's nose under the Arab's tent, that taking "very slowly"
and winding out the tach to 100GHz is the pollution of meaning.

What we are concerned here with is electromagnetics infrequently known
as electrodynamics and rarely as magnetodynamics. The sense behind
electromagnetics is inclusive of dynamics of which statics is a
special case.

Dynamics, of course, means time-varying. In EMF, or electromagnetics,
what varies is magnitude and/or polarity of the electric and magnetic
field. What you find "constant" about the fields (properly observed
as plural) is in their orthogonality (one field is building the other
as it decays in amplitude).

Well, language can be a barrier here when you say "around the cone."

I should have said the current flows around the cone parallel to its
base.

That doesn't happen.

73's
Richard Clark, KB7QHC