Template:Selected anniversaries/July 2
1698: Thomas Savery patents the first steam engine. Savery's patent will force Thomas Newcomen into partnership with him.
1699: Omar Khayyam publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1778: Philosopher and author Jean-Jacques Rousseau dies. His political philosophy influenced the Enlightenment in France and across Europe.
1897: British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
1937: Pilot and author Amelia Earhart disappears. She set many records, wrote best-selling books about her flying experiences, and was instrumental in the formation of The Ninety-Nines, an organization for female pilots.
2017: Math photographer Cantor Parabola takes series of pictures through the Enlightenment in France, in honor of Jean-Jacques Rousseau.