Leiden University at the university. The learning and reputation of Jacobus Gronovius, Herman Boerhaave, Tiberius Hemsterhuis and David Ruhnken, among others, enabled Leiden to maintain its reputation for excellence down to the end of the 18th century. At the end of the nineteenth century, Leiden University again became one of Europe's leading universities. At the world’s first university low-temperature laboratory, professor Heike Kamerlingh Onnes achieved temperatures of only one degree above absolute zero of −273 degrees Celsius. In 1908 he was also the first to succeed in liquifying helium and can be credited with the discovery of the superconductivity in metals. The
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