It uses a number of coils to produce a magnetic field to levitate the 3D printed plastic snail which contains the lighting element itself. The actively controlled levitation base uses a magnetic ...

In this instance, the slip rings allow the current to be transmitted from the rotating coil to the external circuit. As one side of the coil moves up through the magnetic field, a potential ...

But, there may be another way, albeit a rather special case, where a magnet can not only be levitated, but locked in place using a rotating magnetic field. The video shows a demonstration of how ...

it moves parallel to the magnetic field, producing no force. This would tend to make the motor come to a stop, but two features allow the coil to continue rotating: ...