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Re: funny capacitor



Bob Sciamanda wrote:

> Here is your bug! You are forcing one of your local
> conductors to always be at the same (zero) potential
> even when charges vary on it and other conductors.
> You can choose any spacepoint as your potential
> reference, but - unless it is at infinity - its potential
> relative to other points (and infinity) will vary as the
> charges on your N conductors vary.

That comment evidently applies to a V(Q) problem or perhaps a delta_V(Q)
problem. Since Ludwik's software calculates Q(V) I don't see any way it
could possibly suffer from this hypothetical bug.

At 01:12 PM 3/10/01 -0500, Ludwik Kowalski wrote:

I can move the enclosing wall
further away but this will also give me a singular
matrix of Cij coefficients.

Right. The *full* capacitance matrix will always be singular.