Portal:History of science/Selected anniversaries/February 19
- 1473 - Birth of Nicolaus Copernicus, Polish mathematician and astronomer (d. 1543)
- 1526 - Birth of Charles de L'Ecluse, Flemish botanist (d. 1609)
- 1553 - Death of Erasmus Reinhold, German astronomer and mathematician (b. 1511)
- 1660 - Birth of Friedrich Hoffmann, German physician and chemist (d. 1742)
- 1799 - Death of Jean-Charles de Borda, French mathematician, physicist, political scientist, and sailor (b. 1733)
- 1859 - Birth of Svante Arrhenius, Swedish chemist, Nobel laureate (d. 1927)
- 1878 - The phonograph is patented by Thomas Edison
- 1897 - Death of Karl Weierstraß, German mathematician (b. 1815)
- 1916 - Death of Ernst Mach, Austrian-Czech physicist and philosopher (b. 1838)
- 1941 - Birth of David Gross, American physicist, Nobel laureate
- 1943 - Birth of Tim Hunt, British biochemist, Nobel laureate
- 1956 - Birth of Roderick MacKinnon, American biologist, Nobel laureate
- 1985 - Artificial heart recipient William J. Schroeder becomes the first such patient to leave hospital
- 2002 - NASA's Mars Odyssey space probe begins to map the surface of Mars using its thermal emission imaging system