1879 - Jožef Stefan observes that the total radiant flux from a blackbody is proportional to the fourth power of its temperature and states the Stefan-Boltzmann law
1884 - Ludwig Boltzmann derives the Stefan-Boltzmann blackbody radiant flux law from thermodynamic considerations
1888 - Henri-Louis Le Chatelier[?] states that the response of a chemical system perturbed from equilbrium will be to counteract the perturbation
1893 - Wilhelm Wien discovers the displacement law for a blackbody's maximum specific intensity
... (+ 1986)
January 22 - George Balanchine, choreographer (+ 1983)
January 26 - Ancel Keys, scientist
February 1 - S. J. Perelman[?], humorist, author
February 4 - ...