He remarried and had one more son. Planck's eldest son was killed during World War I, and both daughters died in childbirth. In 1944 his second son was executed for involvement in a plot to ...

In 1899 Max Planck became a professor at the University of Berlin, after nine years at the University of Munich and Kiel University, in Germany. In his research there, he turned to a thermodynamic ...

Planck had discovered his main field of research ... qualifying him as a lecturer 1879 Doctorate „Über den zweiten Hauptsatz der Wärmetheorie [On the second fundamental theorem of the mechanical ...