Template:Selected anniversaries/July 22: Difference between revisions
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||1575: Francesco Maurolico dies ... mathematician and astronomer. He made contributions to the fields of geometry, optics, conics, mechanics, music, and astronomy. | ||1575: Francesco Maurolico dies ... mathematician and astronomer. He made contributions to the fields of geometry, optics, conics, mechanics, music, and astronomy. Pic. | ||
||1694: Johann Bernoulli sends "L'Hospital's rule" to L'Hospital under the terms of their agreement of 17 March 1694. Pic. | ||1694: Johann Bernoulli sends "L'Hospital's rule" to L'Hospital under the terms of their agreement of 17 March 1694. Pic. | ||
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||1888: Selman Waksman born ... biochemist and microbiologist, Nobel Prize laureate. | ||1888: Selman Waksman born ... biochemist and microbiologist, Nobel Prize laureate. | ||
||1893: John Rae dies ... physician and arctic explorer ... surgeon who explored parts of northern Canada, found the final portion of the Northwest Passage (Rae Strait) and reported the fate of Sir John Franklin's lost expedition. In 1846–47 he explored the Gulf of Boothia northwest of Hudson Bay. In 1848–51 he explored the Arctic coast near Victoria Island. In 1854 he went from Boothia to the Arctic coast and learned the fate of Franklin. He was noted for physical stamina, skill at hunting and boat handling, use of native methods and the ability to travel long distances with little equipment while living off the land. Pic. | |||
||1902: Reinhold Baer born ... mathematician, known for his work in algebra. He introduced injective modules in 1940. He is the eponym of Baer rings and Baer groups. Pic. | ||1902: Reinhold Baer born ... mathematician, known for his work in algebra. He introduced injective modules in 1940. He is the eponym of Baer rings and Baer groups. Pic. | ||
Revision as of 17:55, 2 March 2019
1826: Priest, mathematician, and astronomer Giuseppe Piazzi dies. He discovered the 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.
2016: Signed first edition of Spiral sells for an undisclosed amount to "a prominent mathematician and long-time resident of New Minneapolis, Canada."