sci.physics.electromag

On Apr 4, 9:45 pm, j...@specsol.spam.sux.com wrote:
> Paul wrote:
> > Unfortunately, the cage is this case will
> > be a conducting chassis, which will enclose the
> > digital compass. This will be a portable device,
> > which the user will walk around with.
> > It won't be a super-conducting shell,
> > so the eddy currents will dissipate as heat. Hopefully
> > the effect will be somewhat transient, but the fact
> > that the compass itself is sensitive enough to
> > measure the earth's magnetic field, means that
> > it just may be sensitive enough to pick up distortions
> > to the field due to the motions of the user, even
> > if those motions are relatively slow.
>
> A simple test would be to put the compass with and without the cage
> on a turntable and spin it; note any difference.
>
> --
> Jim Pennino
>
> Remove .spam.sux to reply.

That's what I had planned to do.

Thanks for the input...