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 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