Dr. Michael Grabe Studied physics at the University of Stuttgart and earned his Dr. rer. nat. degree from the Technical University of Braunschweig, Institute for Physical Chemistry, where he was a research assistant and lecturer for physical chemistry and applied computer science. He now works at the Physikalisch-Technische Bundesanstalt Braunschweig, focusing on legal metrology, computerized interferometric lengths measurements, procedures for the assessment of measurement uncertainties, and adjustment of fundamental constants of physics.