sci.physics.electromag

Paul wrote:
> From what i've read, it sounds like the permeability
> of a conductive enclosure will increase the density
> of the lines of magnetic flux within the conductor,
> so that the magnetic field within the enclosure
> will be less intense, which in effect can make
> the compass less accurate (or slower to respond).

> I'll be using a Honeywell digital compass, and
> I need to know if the metal chassis will need
> to have openings around the compass or not.

> Or, i may need to use a plastic enclosure instead.

> Both purely mathematical/theoretical and real-world
> answers welcome.

A non-magnetic cage around a compass will have no effect, conductivity
isn't the issue for static magnetic fields.


--
Jim Pennino

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