Template:Selected anniversaries/February 13

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  1787: Polymath Roger Joseph Boscovich dies. He was a physicist, astronomer, mathematician, philosopher, diplomat, poet, theologian, and Jesuit priest.

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  1801: inventor, engineer, and chemist James Watt adapts steam engine to perform numerical computation using Gnomon algorithm techniques.

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  1910: Physicist and inventor William Shockley born. He will share the 1956 Nobel Prize in Physics for the invention of the point-contact transistor.

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  1955: Army research laboratories convert modern plowshares into ancient swords, revealing new class of crimes against mathematical constants.

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  1956: Mathematician and philosopher Jan Łukasiewicz dies. He thought innovatively about traditional propositional logic, the principle of non-contradiction and the law of excluded middle.

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  1997: Computer scientist Tony Hoare invents new class of Gnomon algorithm based on Leap Year algorithms.