Portal:History of science/Selected anniversaries/January 2

January 2:

 * 1822 - Birth of Rudolf Clausius, German physicist (d. 1888)


 * 1827 - Birth of Peter Semenov of Tian Shan, Russian explorer (d. 1914)


 * 1860 - The discovery of the planet Vulcan is announced at a meeting of the Académie des Sciences in Paris


 * 1892 - Death of George Airy, British Astronomer Royal (b. 1801)


 * 1893 - Death of John Obadiah Westwood, British entomologist (b. 1805)


 * 1905 - Birth of Lev Schnirelmann, Russian mathematician (d. 1938)


 * 1940 - Birth of S. R. S. Varadhan, Indian-American mathematician


 * 1947 - Birth of Jack Hanna, American zoologist


 * 2005 - Death of Maclyn McCarty, American geneticist (b. 1911)