Template:Selected anniversaries/July 22: Difference between revisions
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||1826 – Giuseppe Piazzi, Italian mathematician and astronomer (b. 1746) | ||1826 – Giuseppe Piazzi, Italian mathematician and astronomer (b. 1746) | ||
||Reinhold Baer (22 July 1902) was a German mathematician, known for his work in algebra. He introduced injective modules in 1940. He is the eponym of Baer rings and Baer groups. | |||
||1915 – Sandford Fleming, Scottish-Canadian engineer and inventor, developed Standard time (b. 1827) | ||1915 – Sandford Fleming, Scottish-Canadian engineer and inventor, developed Standard time (b. 1827) | ||
Revision as of 12:37, 1 December 2017
1826: Priest, mathematician, and astronomer Giuseppe Piazzi dies. He discovered dwarf planet Ceres.
1827: Gem detective and astronomer Niles Cartouchian discovers time crystals on the dwarf planet Ceres.
1827: Engineer and inventor Sandford Fleming dies. He proposed worldwide standard time zones.
1932: Inventor Reginald Fessenden dies. He performed pioneering experiments in radio, including the use of continuous waves and the early—and possibly the first—radio transmissions of voice and music.
1962: Engineer, pilot, and alleged time-traveller Henrietta Bolt tries to warn NASA that Mariner 1 has been targeted by math criminals.
1962: Mariner program: Mariner 1 spacecraft flies erratically several minutes after launch and has to be destroyed.
2017: Advances in zero-knowledge proof theory "are central to the problem of mathematical reliability," says mathematician and crime-fighter Alice Beta.