Off topic but interesting?? Magnetics

From: Eric Smith <eric_at_brouhaha.com>
Date: Tue Nov 7 18:17:03 2000

John Lawson wrote:
> ALSO: Aircraft compasses are generally of the flux-gate or flux-ring
> variety, and use a counter-revolving pattern of light to measure the
> fields, and are much less susceptible to stray fields than the ancient
> magnetic compasses,

You've got me very curious. I'm familiar with flux-gate compasses which
do not use light, and with laser ring gyros which do (but, of course,
are not compasses). What's a flux-ring compass, and how does it use
light?
Received on Tue Nov 07 2000 - 18:17:03 GMT