Starter for 10.
The much mentioned inverse cube law of magnetism is a fallacy.
Magnetism obeys the inverse square law like all other well behaved EM
attributes.
BUT, so far*, magnets always come in dipoles with a North and a South
separated by a variable distance.
Taken as a pair the effect of the two poles at a distance assymptotes
to an inverse cube law response.
In close proximity to a pole other effects will be seen.
"Close" is relative to pole separation.


     R

* Theoretically monopoles can exist. So far nature has refused to
reveal where they are hidden.




On 22 September 2011 23:55, RussellMc <apptechnz@gmail.com> wrote:
> I'm looking for software that allows visualistion (or calculation) of
> magnetic field strength with arrays of "a few" permanent magnets.
> There are numerous general electromagnetic field software packages
> available, both free and for money, but they tend to be either too low
> level or highly oriented towards complex electromagnetic applications
> - and are also liable to have a reasonably significant learning
> requirement.
--=20
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