Any Octave users? What is this code snippet actually doing?

[Bruce Labitt]

On 04/06/2013 02:21 PM, David Rysdam wrote:
> On Sat, 06 Apr 2013 14:03:58 -0400, Bruce Labitt <bruce.labitt at myfairpoint.net> wrote:
>> I'm trying to understand a chunk of 3D FDTD code that I downloaded from
>> the publisher of the book, "Computational Electrodynamics".
> I can't answer your question, but I may enjoy an elaboration of the
> above. Years ago I started some simple-minded electrodynamic simulations
> and gave up when it got hard. I wanted to simulate a "Farnsworth fusor"[1]
> absent a means of actually building one.
>
> [1] http://en.wikipedia.org/wiki/Farnsworth_fusor
>
>
Well I have to admit, this stuff *is* hard, at least for me it is. I 
think you ought to try again on the fusor!  You are smarter now, right. :P