There is an amazing physics demonstration I saw on the web of how a magnet is hovering over a cooled object. Seemingly the magnet hovers (and spins slowly) over a single spot. However, while forcing the magnet out of it's equilibrium it is possible to place it almost anywhere near the cooled object, and it retrieves its equilibrium state over the new spot! This whole phenomenon is a mystery to me... What is the cooled object? How does this happen? And how can there exist multiple possible equilibriums?