Johannes Diderik van der Waals higher temperatures. Nitrogen, oxygen, hydrogen, and helium subsequently succumbed to liquefaction. Heike Kamerlingh Onnes was significantly influenced by the pioneer work of van der Waals. In 1908, Onnes became the first to make liquid helium; this led directly to his 1911 discovery of superconductivity. Van der Waals started his career as a school teacher. He became the first physics professor of the University of Amsterdam when in 1877 the old Athenaeum was upgraded to Municipal University. Van der Waals won the 1910 Nobel Prize in physics for his work on the equation of state for gases and liquids. Johannes Diderik
Heike Hennig 1995, Heike Hennig came back to Germany. From 1998 onwards, she worked as a freelance choreographer and teacher. She instructed body- and moving-oriented teaching-methods at the "Palucca School of Dance", the "University of Leipzig" and the "Academy of Visual Arts in Leipzig" as well as in interdisciplinary workshops including anatomy, painting and choreography. In 2000, Heike Hennig founded the FZTM (Forum of Contemporary Dance and Music) in Leipzig, together with Friedrich U. Minkus, and her ensemble Heike Hennig & Co. As director she developed numerous stage pieces and interdisciplinary art projects at many different stages and art institutions in Leipzig,