Template:On This Day (nonfiction)/May 14

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  1679: Astronomer and mathematician Peder Horrebow born. Horrebow will invent a way to determine a place's latitude from the stars.

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  1863: Mathematician John Charles Fields born. He will found the Fields Medal for outstanding achievement in mathematics.

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  1893: Mathematician Ernst Kummer dies. Kummer contributed to abstract algebra; in ring theory, he introduced the term ideal.

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  1916: Physicist and astrophysicist Robert F. Christy born. Christy will be credited with the insight that a solid sub-critical mass of plutonium can be explosively compressed into supercriticality, a great simplification of earlier concepts of implosion requiring hollow shells.

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  1917: Mathematician, codebreaker, and academic W. T. Tutte born. During the Second World War, he will make a brilliant and fundamental advance in cryptanalysis of the Lorenz cipher, a major Nazi German cipher system.