- Jan 1, 1970
Magnetic fields ARE extremely hard to effectively shield against;
Standing fields, yes. Fields in motion, however can be blocked, and
such blocking depends on frequency.
RF IS a magnetic field.
Slow rate fields are hard to attenuate, yes. Extremely hard...
don't know if I'd go that far.
mu-metal shields (or any other material which a sufficiently high
permeability) are best, but you can try just about any ferromagnetic
material (iron, most steels, etc.).
Don't need a primer.
Still, don't expect any such solution
to be more than partially effective -
No shit. I said before in this very thread that such fields pass
through the entire planet. We do NOT block them, we attenuate their
effects on our "shielded" circuits. That is all we do. We are
electronics industry folks. Are you?
if it truly is a case of magnetic
interference, your best bets have already been mentioned - either
physically relocate/re-orient one of the monitors, or try to match the
refresh rates as closely as possible to reduce the "beat" effect to
Best bets? Have you ever even heard of a dual monitor set-up?
If you have, your "relocate" suggestion is KAKA. It's KAKA even if
you haven't heard of them.
One will never "match" the rates without a shared clock.
Running both at the same rate is a given as dual output cards do not
allow dual rates IIRC. The monitor is internally clocked as well.
That is where the mismatch occurs.
That slight rate mismatch can actually increase the wave effect as
they oscillation carries through very slowly, like windshield wipers
matching up, then mismatching a similarly timed blinking light.
I hope that analogy wasn't too hard to grasp.
Shielding is quite possible, however.
The military runs rows of monitors in quite close proximity all the
time. Why no wave effects? Shielding!