Portal:History of science/Selected anniversaries/September 7
- 1707 - Birth of Georges-Louis Leclerc, Comte de Buffon, French naturalist, biologist and author (d. 1788)
- 1799 - Death of Louis Guillaume Lemonnier, French botanist (b. 1717)
- 1829 - Birth of Friedrich August Kekulé von Stradonitz, German organic chemist (d. 1896)
- 1836 - Birth of August Toepler, German physicist (d. 1912)
- 1917 - Birth of John Cornforth, Australian chemist, Nobel Prize laureate
- 1927 - The first fully electronic television system is achieved by Philo Taylor Farnsworth
- 1991 - Death of Edwin McMillan, American physicist (b. 1907)