Superconductivity and carbon nanotubes, are Type I, while almost all impure and compound superconductors are Type II. Conversely, a spinning superconductor generates a magnetic field, precisely aligned with the spin axis. The effect, the London moment, was put to good use in Gravity Probe B. This experiment measured the magnetic fields of four superconducting gyroscopes to determine their spin axes. This was critical to the experiment since it is one of the few ways to accurately determine the spin axis of an otherwise featureless sphere. Superconductivity was discovered on April 8, 1911 by Heike Kamerlingh Onnes, who was studying the resistance
Heike Hennig and in international festivals. Heike Hennig arranged for the former dancers of the Leipzig opera to return on stage. Ursula Cain, Christa Franze, Siegfried Prölß und Horst Dittmann, who at this time were about 80 years old, told and danced their dance and life stories which were shaped by Mary Wigman, Dore Hoyer, Gret Palucca and Heike Hennig. During the shooting, the next dance piece "Zeitsprünge (Leaps in Time)" was created. here, the protagonists meet up with their younger colleagues in the ensemble "Heike Hennig & Co" and DJ cfm. The different generations might be recognized from the various dance-styles