File:Diamagnetic levitation (single bismuth layer).jpg

A neodymium disk magnet levitating over a polished bismuth plate. The only three forces acting on the magnet are the Earth's gravity, a stack of 1" square neodymium magnets approximately 5 inches above, and the repulsion of the bismuth plate on the disk's own field. The upper magnet array is only used to negate gravity, so that the very weak diamagnetic effect of bismuth may be observed. Note: usually there is a second diamagnetic layer above the hovering magnet for extra stability, but it is possible to do with just one indefinitely, if it is protected from vibration and air movement (making for easier photography).