Liquid helium of liquid water. Helium was first liquefied on July 10, 1908, by the Dutch physicist Heike Kamerlingh Onnes at the University of Leiden in the Netherlands. At that time, helium-3 was unknown because the mass spectrometer had not yet been invented. In more recent decades, liquid helium has been used as a cryogenic refrigerant, and liquid helium is produced commercially for use in superconducting magnets such as those used in magnetic resonance imaging (MRI), nuclear magnetic resonance (NMR), Magnetoencephalography (MEG), and experiments in physics, such as low temperature Mössbauer spectroscopy. The temperature required to produce liquid helium is low because
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