Did you use at least a 1.5 inch thickness of neodymium magnet?
I use two disk drive surplus neodymiums 1/2" x 1" x 3/4 " thick, from
Educational Innovations (about $6 each)
It always works for me, it did for the photo session in the snack.
> Hi, Paul.
> Here is some good questions about one of your snacks: Diamagnetism
> Deb Hunt
> Snacktalk Moderator
> 3601 Lyon Street
> San Francisco, CA 94123-1099
> ---------- Forwarded message ----------
> Date: Tue, 2 Sep 2003 12:10:44 -0400
> From: Pat Dixon <email@example.com>
> To: firstname.lastname@example.org
> Subject: Diamagnetism
> I was intrigued by your push me a grape snacksperiment. However, after a
> trip to the store to buy two kinds of grapes and watermelon, the activity
> did not work for me. In addition to your instructions, I also tried a
> coffee stirrer AND hung the grape on a piece of thread. Nothing seems to
> work and yet we levitate frogs here and the reason they levitate in a
> magnetic field is the diamagnetic property of water! So…please let me
> where I went wrong. Grapefully, Pat Dixon.
> Patricia J. Dixon, Ph.D.
> Director, Center for Integrating Research & Learning
> National High Magnetic Field Laboratory
> 1800 East Paul Dirac Drive
> Tallahassee, FL 32310
> 850-644-5818 (fax)
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