Professor Dr. André Thess (born February 22nd, 1964) is the head of the Institute of Energy Storage at the University of Stuttgart. His research interests are in thermal energy storage, electromagnetic processes and high-temperature measurement technology. Professor Thess’s textbook “The Entropy Principle – Thermodynamics for the Unsatisfied” helps mechancal engineering and physics students to better understand the mathematical foundations of entropy.? Professor Thess received PhD (summa cum laude) in 1991 from Dresden University of Technology. Between 1991 and 1993 worked as a post doctoral research associate at the Ecole Normale Superieure de Lyon, at the Institute de Mécanique de Grenoble (France) and as a fellow of the German Research Council (DFG) at Princeton University. In 1995 he received his habilitation (German second doctoral degree) in theoretical physics. In 1998, he was appointed as Professor of Engineering Thermodynamics at Ilmenau University of Technology at the age of 34 years.? His research achievements have been awarded with guest professorships at the University of Nagoya (Japan), at Stanford University (USA). In 2007 he received the Thuringian Research Award “Thüringer Forschungspreis” for his contributions to electromagnetic flow measurement.? From 2010 to 2014 Professor Thess served as a member of the board of the International Association of Applied Mathematics and Mechanics (GAMM). Since 2002 he has been a lifetime member of the American Physical