Rick, there appears to be interest in "shaking" the magnetic field for both
atomic clocks and medical devices which operate at very small magnetic fields
(such as magnetoencephalography). Shaking is mentioned here:
https://en.wikipedia.org/wiki/Magnetoencephalography#Active_shielding_system
I
t;Richard (Rick) Karlquist"
> To: Discussion of precise time and frequency measurement
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> Subject: [time-nuts] "Shaking" of magnetic shields in atomic clocks
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> In the NIST paper availa
In the NIST paper available at the URL below:
http://pdfs.semanticscholar.org/47ac/742de238c0ece5e91ff7d12c515b9173eb60.pdf
At the beginning of page 2 (4th line) the paper
states:
"Note that the shield permeability is a nonlinear function of the
magnetization and increases to a maximum
