The side of the table is a magnet and also the puck is a routine wafer covered with a fifty percent micrometer (around one-hundredth the size of a hair) veneer of superconductor. Superconductors perform electric currents with no resistance when cooled down to severe temperature level (which is why the puck is frosted). The levitation is feasible many thanks to quantum securing (likewise called change pinning). Superconductors have absolutely no electric resistance, as well as they constantly intend to remove electromagnetic fields from themselves. In this GIF, since the superconductor layer around the wafer is so slim, some electromagnetic field obtains "caught" inside it. The superconductor cannot relocate the electromagnetic field without damaging the superconducting state, so the caught littles electromagnetic field simply remain there, securing the puck in a floating placement in midair. As well as due to the fact that the track is a circle with the exact same electromagnetic field throughout, the puck could circumnavigate without ever before damaging the lock. If you intend to see something truly awesome, the puck does the precise very same point also when turned upside-down.