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Two, Six, Many chemeurope.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from chemeurope.com Daily Mail and Mail on Sunday newspapers.
E-Mail Credit: Jonas Ahlstedt / Lund University Bioimaging Centre (LBIC) Phase transitions describe dramatic changes in properties of a macroscopic system - like the transition from a liquid to a gas. Starting from individual ultracold atoms, Heidelberg University physicists were able to observe the emergence of such a transition with an increasing number of particles. The research work was carried out in the field of quantum physics under the direction of Prof. Dr Selim Jochim from the Institute for Physics. In order to formulate effective theories in physics, microscopic details are set aside in favour of macroscopically observable quantities. A cup of water can be described by properties like pressure, temperature and density of the fluid, whereas the position and velocity of the individual water molecules are irrelevant. A phase transition describes the change of a macroscopic system from one state of matter, like fluid, to a different state of matter, like gaseo ....
Physicists observe the emergence of collective behaviour phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.