(Jiachen flood the temple), February 20, 1844, the Austrian physicist Bohr Boltzmann was born in Vienna.

1844, 20, 2009, the Austrian physicist and one of the founders of the statistical physics of glass Boltzmann was born in Vienna. In 1872 Boltzmann published the results of the study gas transition from unbalanced to balanced process, given the mathematical expression known as the Boltzmann equation. 1906 Boltzmann committed suicide in Duino.