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, A:

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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