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Re: Magnetic Shielding



At 05:22 PM 4/10/97, Doug Craigen wrote:

... wrap the area in mumetal and avoid any holes or cracks
where there can be large edge effects.
...
An alternative of course is superconductors. ..
You have the Meissner Effect repelling the field, rather than > surface
charges terminating it.

| Doug Craigen |
| |
And then there's active cancellation: like sound cancellation, moderately
easy in one dimension, tough in two, and usually
next to impossible in three - the lower the dominant frequencies,
the better. Uses three pairs of orthogonal coils.

Regards
brian whatcott <inet@intellisys.net>
Altus OK