How strong of a magnet?

K_2 · #1 Feb 14, 2008, 08:43 AM

My 8 yr old daughter is doing a project for the science fair that is "Can you find traces of iron in food, dollar bills, and other household items with a magnet?"

I was wondering how strong of a magnet she needs for this project and a good place to buy the magnets would be?

Thanks!

caibuadday · Feb 24, 2008, 12:33 PM

Quote:

Originally Posted by K_2

My 8 yr old daughter is doing a project for the science fair that is "Can you find traces of iron in food, dollar bills, and other household items with a magnet?"

I was wondering how strong of a magnet she needs for this project and a good place to buy the magnets would be?

Thanks!

try Radio Shack, if you get the rare earth magnet becareful, i got cut because two of them slam together too quick (they came from old hard drive)



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