Sparky:
I have no idea your wife sleeps better on it. I've no doubt I could exchange her pad tomorrow night with one that looks exactly like it and has no magnetic field at all and she'd never know the difference.

Science is defined by provable.

So lets put forth a reasonable double blind study.
1. You hire someone a pad, identical in every way to the one your wife has but non-magnetic.
2. You give someone the keys to your house and tell them on some day, any day, in the next 6 months to swap the two pads.
3. If it is science your wife can pin-point the day the pads were swapped even though she doesn't know when and you don't know when.
4. Nonsense is if she can't.

I'll put $100 on the fact that she continues to sleep through the night content in her placebo effect.

DA Morgan