Portal:History of science/Selected anniversaries/December 19
- 1714 - Birth of John Winthrop, American astronomer (d. 1779)
- 1813 - Birth of Thomas Andrews, Irish chemist (d. 1885)
- 1814 - Death of Joseph Bramah, Inventor and Locksmith, notably invented the beer pump
- 1852 - Birth of Albert Abraham Michelson, Prussian-born American physicist, Nobel laureate (d. 1931)
- 1901 - Birth of Rudolf Hell, German inventor (d. 2002)
- 1903 - Birth of George Davis Snell, American geneticist, Nobel laureate (d. 1996)
- 1915 - Death of Alois Alzheimer, German neuroscientist (b. 1864)
- 1944 - Birth of Mitchell Feigenbaum, American mathematical physicist
- 1946 - Death of Paul Langevin, French physicist (b. 1872)
- 1953 - Death of Robert Millikan, American physicist, Nobel laureate (b. 1868)
- 1961 - Birth of Eric Allin Cornell, American physicist, Nobel laureate
- 2004 - Death of Herbert C. Brown, English-born American chemist, Nobel laureate (b. 1912)