Re: Conserving Q/Maxwell

[Ludwik Kowalski <kowalskiL@MAIL.MONTCLAIR.EDU>]

As  mentioned before, the Faraday effect (net Q in a dielectric material)
is probably only marginally related to the concept of the displacement
current. I want to learn more about this "mathematical current", and
about ways of making it meaningful in a non calculus course.

Jerome Epstein wrote:

> This seems to me a whole lot of stuff about something that really isn't
> very difficult.
>
> The displacement "current" is nothing more than a time varying electric
> field. It is called a "current", even though it doesn't involved moving
> charges, because it generates a magnetic field exactly as does a "real"
> current (that is, moving charges). In fact dE/dt just adds to the usual
> current in Maxwell's equations.