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Blog post: swansont: De-Mag-Ni-Tize! De-Mag-Ni-Tize!

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(I'm picturing a dalek-like voice saying this, instead of ex-term-in-ate!)

 

[youtube:http://www.youtube.com/watch?v=IlnZKSR73S0]

 

Mechanical shock also tends to lessen the magnetization of a ferromagnet, and you can also scramble it with a strong oscillating external field. That will at least wound it, if not not kill it.
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