Diamagnetic materials develop an induced magnetic field in an external magnetic field. Such bodies can float above or below the source of an inhomogeneous magnetic field.
The induced magnetic field holds the body in a certain position of the potential of the external magnetic field depending on the gravity and the weight of the body.
FARADAY explains the behaviour of diamagnetic materials with the external magnetic field being forced out of the material. MEISSNER and OCHSENFELD followed this explanation for superconductors.
