Levitating Magnet superconductor
A neodymium rare earth magnet is suspended in mid air over a superconductor in a liquid nitrogen bath. The induced loop currents create dynamic magnetic fields that oppose the magnet's magnetic field that created them. My 7 year old and her two friends watch in amazement. This is what physics is all about - teaching our young. If you like testing your mind, check out the site http://www.mindchallenger.com