- 1844 Austrian physicist Ludwig Boltzmann born; father (with Willard Gibbs) of statistical mechanics; the Stefan-Boltzmann law.
- 1872 American inventor Luther Crowell patents a machine to make his folding (brown) paper bag, today's world standard.
- 1931 American mathematician John Milnor born; 1962 Fields, for differential topology on 7-dimensional spheres.
- 1934 American physicist Ernest Lawrence patents the cyclotron, the first particle accelerator; 1939 Nobel.
- 1945 Actor Brion James born; Leon: "Wake up! Time to die!"
Wednesday, February 20, 2008
Today in History: February 20
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