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News Publisher: Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin
Editors: Andreas Barthel, Alexander Gottwald, Tobias Klein, Christoph Kolbitsch, Christian Lisdat, Hansjörg Scherer, Erika Schow, Jens Simon (responsible)
Layout: Volker Käbert, Alberto Parra del Riego (concept)
Translation: PTB Translation Office (Cécile Charvieux)
Editorial Office: Press and Information Office, PTB, Bundesallee 100, D-38116 Braunschweig, phone +49 531 592-3006, fax +49 531 592-3008, e-mail: 
ptbnews(at)ptb.de