Yearbook 2008

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Gases with temperatures close to absolute zero make it possible to study a plethora of quantum mechanical effects which could not be seen at higher temperatures because of the thermal motion of the particles. These effects include Bose-Einstein condensation, reversible chemical reactions as well as a variety of effects in optical lattices. more
The nuclei in atoms and molecules move typically on femtosecond timescales (1 fs = 10-15 s). Electrons are moving much faster and may change their position on timescales down to attoseconds (1 as = 10-18 s). New experimental techniques allow to take movies of the electrons on this timescale and to gain deeper insight into the ultrafast dynamics of electrons in atoms, molecules and nanostructures. more
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