Karl Preis studied technical physics at the Technical University in Graz/Austria. He made his master thesis at the Subsecond Thermophysics Group at the Institute for Experimental Physics at the Technical University Graz. After receiving his degree he started working on his PhD thesis at voestalpine Stahl in Linz in Austria. There he is working on the characterisation of different steel surfaces by using GD – OES. http://www.voestalpine.com/ag/en.html.