Physics Question #1974

Ryan, a 13 year old male from Maryland asks on March 10, 2004,

I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over time? Also, what is the most powerful magnet I can buy?

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The answer

James Livingston answered on March 10, 2004

Most modern magnets do not significantly lose their strength over time unless they are heated. The most powerful magnets available today are usually called "neodymium magnets," actually a compound of iron, neodymium, and boron.

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