Portal:History of science/Selected anniversaries/September 14

September 14:

 * 1486 - Birth of Heinrich Cornelius Agrippa, German alchemist (d. 1535)


 * 1712 - Death of Giovanni Domenico Cassini, Italian-born astronomer (b. 1625)


 * 1713 - Birth of Johann Kies, German mathematician (d. 1781)


 * 1752 - The British Empire adopts the Gregorian calendar, skipping eleven days (the previous day was September 2)


 * 1769 - Birth of Alexander von Humboldt, German naturalist and explorer (d. 1859


 * 1837 - Birth of Nikolai Bugaev, Russian mathematician (d. 1903)


 * 1849 - Birth of Ivan Pavlov, Russian scientist, recipient of the Nobel Prize in Physiology or Medicine (d. 1936)


 * 1879 - Death of Bernhard von Cotta, German geologist (b. 1808)


 * 1920 - Birth of Alberto Calderón, Argentine mathematician (d. 1998)