By observing the floating disc and rings visitors become acquainted with the properties of a magnetic field and how magnetic suspension works. Magnets under the mirror generate a magnetic field in such a way that the rings remain in a certain position.
Magnetic levitation or magnetic suspension is a method also used in rollercoaster and magnetic train suspensions to keep them on the track and for propulsion purposes. The electromagnetic field compensates for gravitation force and keeps the rings in mid air. Is the object stable in all directions and axes?