Template:Selected anniversaries/October 15
1608: Physicist and mathematician Evangelista Torricelli born. He will invent the barometer, make advances in optics, and work on the method of indivisibles.
1609: Physicist, inventor, and crime-fighter Galileo Galilei discovers secret math crime gang in the Vatican, vows to "see them all hang."
1863: Confederate submarine H. L. Hunley sinks for the second time, killing all eight of her second crew, including Horace Hunley himself, who was aboard at the time, even though he was not a member of the Confederate military.
1929: Jazz drummer and theoretical physicist Albert Einstein calls Gene Krupa "the most brilliant young drummer of his generation."
1965: Mathematician Abraham Fraenkel dies. He contributed to axiomatic set theory, and published a biography of George Cantor.