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 other cities. On juries and artistic advisory councils, Heike Hennig makes efforts to support contemporary performing art and music. In 2009, Heike Hennig was invited to teach at the University of British Columbia in Vancouver and Kelowna as well as at Simon Fraser University in Burnaby, Canada as a "Guest Speaker" via film, workshop and lectures. Since 2010, Heike Hennig has taught at the Zurich University of the Arts (ZHdK). 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