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Gnomon Chronicles is a work of fiction and nonfiction by Karl Jones (nonfiction).

Diaries

My online diary (May 23)
War Diaries (May 23) - entries from wartime diaries and letters

Are You Sure ...

... that astronomer and academic Geminiano Montanari made the the observation that Algol in the constellation of Perseus varies in brightness?

... that the 1956 epic set theory revisionist historical film The Ten Axioms remains controversial to this day due to its treatment of the axiom of choice?

On This Day in History and Fiction: June 1

1633: Astronomer and academic Geminiano Montanari born. He will make the observation that Algol in the constellation of Perseus varies in brightness.
1849: Territorial Governor Alexander Ramsey declared the Territory of Minnesota officially established.
1867: Mathematician Karl Georg Christian von Staudt dies. He used synthetic geometry to provide a foundation for arithmetic.
1895: Havelock and Herman Hollerith announce plan to collaborate on new data exchange protocol.
1890: The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
1944: First successful run of the improved Colossus Mark 2 computer], just in time for the Normandy landings on D-Day. Colossus Mark 2 used shift registers to quintuple the processing speed.