Template:Selected anniversaries/October 23: Difference between revisions
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||1875 – Gilbert N. Lewis, American chemist and academic (d. 1946) | ||1875 – Gilbert N. Lewis, American chemist and academic (d. 1946) | ||
||Lt. Col. Jan Kowalewski (b. 23 October 1892) was a Polish cryptologist, intelligence officer, engineer, journalist, military commander, and creator and first head of the Polish Cipher Bureau. He recruited a large staff of cryptologists who broke Soviet military codes and ciphers during the Polish-Soviet War, enabling Poland to weather the war and achieve victory in the 1920 Battle of Warsaw. Pic. | |||
||1894 – Emma Vyssotsky, American astronomer and academic (d. 1975) | ||1894 – Emma Vyssotsky, American astronomer and academic (d. 1975) | ||
Revision as of 13:29, 30 March 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.