Template:Selected anniversaries/April 22: Difference between revisions
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File:Wilhelm_Schickard_1632.jpg|link=Wilhelm Schickard (nonfiction)|1592: Minister, scholar, astronomer, mathematician, cartographer, and inventor [[Wilhelm Schickard (nonfiction)|Wilhelm Schickard]] born. He will design and build calculating machines, and invent techniques for producing improved maps. | File:Wilhelm_Schickard_1632.jpg|link=Wilhelm Schickard (nonfiction)|1592: Minister, scholar, astronomer, mathematician, cartographer, and inventor [[Wilhelm Schickard (nonfiction)|Wilhelm Schickard]] born. He will design and build calculating machines, and invent techniques for producing improved maps. | ||
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||1758 – Antoine de Jussieu, French botanist and physician (b. 1686) | ||1758 – Antoine de Jussieu, French botanist and physician (b. 1686) | ||
||1778 – James Hargreaves, British inventor (b. 1720) | ||1778 – James Hargreaves, British inventor spinning jenny (b. 1720). No pic. | ||
||1833 | File:Richard_Trevithick.jpg|link=Richard Trevithick (nonfiction)|1833: Engineer and explorer [[Richard Trevithick (nonfiction)|Richard Trevithick]] dies. He was an early pioneer of steam-powered road and rail transport, developing the first high-pressure steam engine, and building the first full-scale working railway steam locomotive. | ||
||1864 – The U.S. Congress passes the Coinage Act of 1864 that mandates that the inscription In God We Trust be placed on all coins minted as United States currency. | ||1864 – The U.S. Congress passes the Coinage Act of 1864 that mandates that the inscription In God We Trust be placed on all coins minted as United States currency. | ||
Revision as of 15:43, 21 April 2018
1592: Minister, scholar, astronomer, mathematician, cartographer, and inventor Wilhelm Schickard born. He will design and build calculating machines, and invent techniques for producing improved maps.
1833: Engineer and explorer Richard Trevithick dies. He was an early pioneer of steam-powered road and rail transport, developing the first high-pressure steam engine, and building the first full-scale working railway steam locomotive.
1904: American physicist and academic J. Robert Oppenheimer born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, and the first prediction of quantum tunneling.
1961: Plutonium used for crimes against mathematical constants, says Cantor Parabola.
1977: Optical fiber is first used to carry live telephone traffic.
2006: Computer scientist and academic Henriette Avram dies. She developed the MARC (Machine Readable Cataloging) format, the international data standard for bibliographic and holdings information in libraries.