Marcel Pourbaix was born on 16 September 1904 in Myshega (Aleksin District, Tula Oblast, Russia, (54°31′N37°2′E), where his father was a consultant on an engineering project. A brilliant chemist, he performed his most well known research at the University of Brussels, studying corrosion. His biggest achievement is the derivation of potential-pH, better known as “Pourbaix Diagrams”. Pourbaix Diagrams are thermodynamic charts constructed using the Nernst equation and visualize the relationship between possible phases of a system, bounded by lines representing the reactions that transport between them.