Well you seem to be a person who know a lot about magnets... Can you
tell me which metal out of the whole world will completly stop the line
of forces of a magnet? I have been told : lead, copper, and nickel, But
the first two don't work. i need the meatl to be the thivkness of a
coin or fifty cents piece... Can you help me? Well plez tell me your
knowlefe of this question!
Sincerely
Benjamin
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