Superconductivity a better environmental performance but could also improve public acceptance for expansion of the electric grid. 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
Heike Matthiesen at festivals and in guitar concert series and a juror in national and international competitions. Heike Matthiesen is especially passioned about the music of female composers. Heike Matthiesen represents a new generation of classical musician, communicative, open for new media and an avid ambassador for classical music on all relevant social media platforms. Solo: Heike Matthiesen Heike Matthiesen (born 27 June 1969) is one of Germany's leading classical guitarists whose virtuosity and spirited performance, coupled with a charismatic stage presence, are regularly highlighted by the press. Heike Matthiesen was born in Braunschweig, into a family of classical musicians. From early