A question about per.magnets and lead

[giolvasrulez]

Does anybody know what will happen if you place a relatively thick lead plate on the poles of a permament magnet?

[Low-Q]

Does anybody know what will happen if you place a relatively thick lead plate on the poles of a permament magnet?

Nothing whatsoever. Lead can shield radioactive radiation, but magnetic fields goes through everything. You can however guide magnetism in alternative paths without altering the total magnetic field in streingth, by using magnetic materials such as iron and other magnets. Some materials repels from magnetism also. Bismuth and carbonfiber are a few of such materials.

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[giolvasrulez]

I am asking because I have read a theory that closely relates cosmic radiation to magnetism. And it also states that if you block a magnet with lead the magnet looses its strength (not entirely but in a large percent), because lead blocks cosmic radiation.
Is there a chance that anything like that is true?

[giolvasrulez]

Let me put it this way:

Does the newly found physical property of permeability has anything to do with cosmic rays (hard component) shielding?

[0c]

1) Lead is slightly diamagnetic, so will tend to repel a magnet just a tiny bit.

2) Permeability is not something new unless you think hundreds of years old is new. As far as I know, gamma rays are not dipolar like magnets, more like super high-frequency light waves traveling in a straight line.