An experiment to illustrate the Meissner effect in
a superconductor. It was performed at the University of Twente in
Enschede, The Netherlands, under the supervision of Prof. Alexande.
Meissner effect is the falling off of the magnetic flux within a superconductor (see superconductivity)
when it is cooled to a temperature below the critical temperature in a magnetic
field. It was discovered by Walter Meissner (1882–1974) in 1933 when
he observed that the Earth's magnetic field was expelled from the interior
of tin crystals below 3.72 K.