using only static magnetism - impossible to stably levitate against gravity?
jellicle: For extra credit, explain why the Levitron DOES work:http://www.youtube.com/watch?v=05FDGCis-Sw(no camera tricks in that BTW, it's just a magnet top and a magnet bottom.  The weight in the top must be carefully adjusted in order for the device to work.  It will continue levitating for as long as the top keeps spinning fast enough - if you carefully blow on the top's side to speed it up, you can keep it levitating for many minutes.)