In message <002c01c8f1eb$46c3ba20$6401a8c0@christopher>, dated Tue, 29 
Jul 2008, Chris Wells <[email protected]> writes:


>I decided that a CRT monitor close the coils would make a magnetic 
>field detector and found the display to become significantly distorted.

Depending on the field direction, a CRT monitor can be quite a sensitive 
detector. You can see disturbances from around 1 A/m upwards.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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