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 Hanada have to be made concerning what is to be demolished and how one can or should adapt oneself when building. It is a tricky balancing act in which conservative conclusions come easily. When a new building stands next to an old one, the difference in periods is made articulate, the new enriches the old and vice versa, resulting in a powerful wholeness. The extension has officially been put on hold in autumn 2009 after a change in local government and a massive campaign about what critics saw as an unacceptable impact on the original, Asplund approved complex. Heike Hanada Heike