Template:Selected anniversaries/February 6
1582: Mathematician, astronomer, and philosopher Mario Bettinus born. He will write Apiaria Universae Philosophiae Mathematicae, an encyclopedic collection of mathematical curiosities.
1804: Chemist, philosopher, educator, and clergyman Joseph Priestley dies. He is historically credited with the discovery of oxygen, having isolated it in its gaseous state, but his determination to defend phlogiston theory and to reject what would become the chemical revolution left him isolated within the scientific community.
1868: Physicist and electrical crime-fighter Galileo Ferraris invents new type of AC power systems which detects and prevents crimes against physics.
1916: Mathematician and physicist John Crank born. He will work on the numerical solution of partial differential equations; his work with Phyllis Nicolson on the heat equation will result in the Crank–Nicolson method.
1927: Physicist and space activist Gerard K. O'Neill born. O'Neill will invent the particle storage ring for high-energy physics experiment, and the mass driver, a magnetic launcher. In the 1970s, he will develop a plan to build human settlements in outer space.
1957: Industrialist, public motivational speaker, and alleged crime boss Baron Zersetzung calls the upcoming Tybee nuclear bomb accident "a rock-solid business investment which is certain to generate handsome returns for early investors."
1958: Air Force and Navy personnel begin search for hydrogen bomb known as the Tybee Bomb, which was lost in an accident the day before.
1959: Film director and arms dealer Egon Rhodomunde raises funds for new comedy film about the Tybee nuclear bomb accident, denies accusations that he is "capitalizing on a tragedy."
2017: Signed first edition of Green Ring unexpectedly generates "at least five, perhaps six" previously unknown hues of green during an otherwise routine annual chromatographic checkup.