Superconductivity Superconductivity Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic flux fields occurring in certain materials, called superconductors, when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911, in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor during its transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of
Heike Hennig Heike Hennig Heike Hennig (born 8 November 1966) is a German dancer, choreographer and director of the opera and dance ensemble "Heike Hennig & Co". Heike Hennig had her first dance lessons at the age of 5 years in Leipzig. In 1989, through her escape from East Germany (GDR), she was able to study modern dance, choreography and Body-Mind Centering (BMC) in Cologne and at Moving on Center – School for Participatory Arts and Research in Oakland, California; she then studied in the US with teachers such as Steve Paxton. Following that, Heike Hennig worked in Brazil and Portugal. In