Template:Selected anniversaries/October 23: Difference between revisions
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||1774 – Michel Benoist, French missionary and astronomer (b. 1715) | ||1774 – Michel Benoist, French missionary and astronomer (b. 1715) | ||
||1842: Henry Harrison Chase Dunwoody born. Known in his own time for his work with the Army’s Weather Bureau, Dunwoody invented the carborundum radio detector in 1906. It was the first practical mineral radio wave detector and the first commercial semiconductor device. Pic. | |||
File:William_D._Coolidge.jpg|link=William D. Coolidge (nonfiction)|1873: Physicist and engineer [[William D. Coolidge (nonfiction)|William D. Coolidge]] born. He will make major contributions to X-ray machines, and develop ductile tungsten for incandescent light bulbs. | File:William_D._Coolidge.jpg|link=William D. Coolidge (nonfiction)|1873: Physicist and engineer [[William D. Coolidge (nonfiction)|William D. Coolidge]] born. He will make major contributions to X-ray machines, and develop ductile tungsten for incandescent light bulbs. | ||
Revision as of 08:10, 18 February 2018
1873: Physicist and engineer William D. Coolidge born. He will make major contributions to X-ray machines, and develop ductile tungsten for incandescent light bulbs.
1973: Watergate scandal: President Richard M. Nixon agrees to turn over subpoenaed audio tapes of his Oval Office conversations.
2014: Physicist and academic Tullio Regge dies. In 1968 he and G. Ponzano developed a quantum version of Regge calculus in three space-time dimensions now known as the Ponzano-Regge model; this was the first of a whole series of state sum models for quantum gravity known as spin foam models.
2016: Steganographic analysis of The Eel Time-Surfing reveals quantum gravity control software based on spin foam models.