Re: I need help. (long)

["John S. Denker" <jsd@MONMOUTH.COM>]

Bernard Cleyet conjectured that:
...
>   the effect of finite embedded
> medium can be qualitatively detmnd by finding the equipotentials over a
> larger area - especially near the edges.  The %age where "fringing" is
> evident (to the whole area for the sheet) is a measure of the error?

Well, using the periodic-boundary approach discussed
in my previous note, it is !!quantitatively!! determined.

The fringing _from_ this cell into the whole larger sheet
is exactly the same as the fringing _into_ this cell from
the neighbors.  You just have to add up all the contributions.

This trick has been around since 1822.
http://www.google.com/search?q=fourier+analytique+chaleur