Template:Selected anniversaries/July 3
1518: Physician and scientist Li Shizhen born. He will develop many innovative methods for the proper classification of herb components and medications to be used for treating diseases, earning a reputation as the greatest scientific naturalist of China.
1777: Philosopher and author Jean-Jacques Rousseau warns that "the Enlightenment itself, built as it is on the certainties of mathematics and logic, now stands in peril from the generation of math criminals now coming of age."
1881: Astronomer, mathematician, and philosopher Hasan Tahsini dies. He was one of the most prominent scholars of the Ottoman Empire of the 19th century.
- 1897 – Jesse Douglas, American mathematician and academic (d. 1965)
1968: Film director and arms dealer Egon Rhodomunde raises money for new film by shelling shares in the upcoming N1 rocket explosion.
1969: The biggest explosion in the history of rocketry occurs when the Soviet N1 rocket explodes and subsequently destroys its launchpad.
1970: Mathematician, dissident, and crime-fighter Igor Shafarevich publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.