Reading unfortunate Planck
Planck submitted his doctoral dissertation in 1879, at the age of 21. According to Planck’s autobiography, his dissertation elaborated on Clausius's entropy and its role in distinguishing reversible and irreversible processes. His dissertation failed to interest his professors, Helmholtz and Kirchhoff among them. Planck subsequently, as a young academic, applied the principle of the increase of entropy to analyze phases and ideal-gas mixtures.