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Re: visualizing fields near charged objects

On Fri, 9 Feb 2001, John Mallinckrodt wrote:

where r_a is the radial index for cell a. Setting the Laplacian =
0 and solving for a we get

a = (b+c+d+e)/4 + (c-e)/(2*r_a)

Oops! I should have said:

a = [ (b+c+d+e) + (c-e)/(2*r_a) ]/4

John Mallinckrodt
Cal Poly Pomona