Re: Mushield box



Uncle Al wrote:
> p6 wrote:
> >
> > What mushield commercial material have you used that is
> > confirmed to be 100% effective.
> >
> > http://www.mushield.com/
> >
> > Has anyone tried the above or construct one.
> >
> > I need to shield from Earth's magnetic field and a ready
> > made mushield box would be preferable.
> >
> > For those doing experiments who have used such mushield.
> > Pls share the configuration you used.
>
> <http://farside.ph.utexas.edu/teaching/jk1/lectures/node52.html>
> Theory
> http://www.magnetic-shield.com/faq/pma.html
> Practice
>
> One often starts with a large radius mounted Helmholtz pair of coils
> to blank most of the ambient magnetic field. Orientation matters
> (magnetic inclination).
>
> Metglas 2714AZ significantly outperforms (250% the magnetic
> permeability) Mu-metal or Co-netic alloy in low intensity fields and
> is physically more robust. A magnetic shield for weak fields is
> multiple layers of very ferromagnetically soft high permeability foils
> preferably separated by a wisp or more of dielectric (mylar or
> polypropylene film). Bending either of the latter two alloys makes
> them magnetically harder.
>
> http://www.metglas.com/
> http://www.lessemf.com/278.html
> dig them numbers
>
> http://www.lessemf.com/mag-shld.html
> read it all
> http://www.amuneal.com/pages/magshield-material.php
>
> --
> Uncle Al

Actually I want to construct a mushield room where I can
get inside. I wanna know firsthand what is the role of
earth natural magnetic field on our health. Some reported
shielding can disorient the entire body. Some astronauts
may lose muscle function not just from atropy in zero
gravity but also from this lack of magnetic field should
they go beyond the magnetosphere which extends tens of
thousands of kilometers into space.

If a human size mu shield is expensive. I may just construct
a small one where I can put my arms inside.

p6

.

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