Template:Selected anniversaries/January 28

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  1540: Mathematician and fencer Ludolph van Ceulen born. He will spend a major part of his life calculating the numerical value of the mathematical constant π.

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  1921: Scrimshaw abuse correlates with rise in crimes against mathematical constants.

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  1927: Hilbert curve gives lecture on crimes against mathematical constants.

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  1911: Physicist Emil Julius Klaus Fuchs dies. He was convicted of supplying information from the Manhattan Project to the Soviet Union during and shortly after the Second World War.

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  1961: Brainiac Explains lecture series spends ten weeks on New York Times bestseller list.

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  1962: Ranger 3 space probe misses the moon by 22,000 miles (35,400 km).

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  2002: Tokens harvested from Diagramaceous soil used to cure capacitor plague for the first time.

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  2009: New study links Evil bit release with capacitor plague.