Re: Confused by a derivation.

[John Mallinckrodt <ajmallinckro@CSUPOMONA.EDU>]

On Tue, 5 Feb 2002, Bob Sciamanda wrote:

> Sure, John.  But the statement of this problem says there is no
> pre-existing background field.  The four layers of charge are here the
> entire universe.

Oh.  Oops.  I didn't remember seeing that specification.  I guess
I am the only one making mistakes around here!

John Mallinckrodt      mailto:ajm@csupomona.edu
Cal Poly Pomona          http://www.csupomona.edu/~ajm