Template:Selected anniversaries/September 18: Difference between revisions
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||1819: Léon Foucault born ... physicist and academic ... best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope. Pic. | ||1819: Léon Foucault born ... physicist and academic ... best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope. Pic. | ||
||1918: Carl-Gustav Esseen born ... mathematician. His work was in the theory of probability. The Berry–Esseen theorem is named after him. Pic search | ||1918: Carl-Gustav Esseen born ... mathematician. His work was in the theory of probability. The Berry–Esseen theorem is named after him. Pic search. | ||
||1921: Florence Marion Newman Trefethen born ... American codebreaker, historian of operations research, poet, and English professor. Pic daughter's blog, saved local: http://gwynedtrefethen.blogspot.com/2013/12/weekly-report-2013-1227.html | ||1921: Florence Marion Newman Trefethen born ... American codebreaker, historian of operations research, poet, and English professor. Pic daughter's blog, saved local: http://gwynedtrefethen.blogspot.com/2013/12/weekly-report-2013-1227.html | ||
||1924: Anthony Poshepny born ... CIA paramilitary officer in what is now called Special Activities Division (renamed Special Activities Center in 2016). He is best remembered for training the US-funded secret army in Laos during the Vietnam War. Pic search | ||1924: Anthony Poshepny born ... CIA paramilitary officer in what is now called Special Activities Division (renamed Special Activities Center in 2016). He is best remembered for training the US-funded secret army in Laos during the Vietnam War. Pic search. | ||
||1851: First publication of The New-York Daily Times, which later becomes The New York Times. | ||1851: First publication of The New-York Daily Times, which later becomes The New York Times. | ||
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||1908: Victor Amazaspovich Ambartsumian born ... a Soviet Armenian scientist, and one of the founders of theoretical astrophysics. He worked in the field of physics of stars and nebulae, stellar astronomy, dynamics of stellar systems and cosmogony of stars and galaxies, and contributed to mathematical physics. Pic. | ||1908: Victor Amazaspovich Ambartsumian born ... a Soviet Armenian scientist, and one of the founders of theoretical astrophysics. He worked in the field of physics of stars and nebulae, stellar astronomy, dynamics of stellar systems and cosmogony of stars and galaxies, and contributed to mathematical physics. Pic. | ||
||1912: Frank Farmer born ... physicist, and a pioneer in the application of physics to medicine, particularly in relation to the practical aspects of cancer treatment by radiation. Pic search. | |||
File:Einstein drumming.jpg|link=Albert Einstein|1913: Jazz drummer and theoretical physicist [[Albert Einstein]] performs at charity concert to benefit victims of [[crimes against mathematical constants]]. | File:Einstein drumming.jpg|link=Albert Einstein|1913: Jazz drummer and theoretical physicist [[Albert Einstein]] performs at charity concert to benefit victims of [[crimes against mathematical constants]]. | ||
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||1934: The USSR is admitted to the League of Nations. | ||1934: The USSR is admitted to the League of Nations. | ||
||1939: Jan Camiel Willems born ... mathematician and theorist. Pic search | ||1939: Jan Camiel Willems born ... mathematician and theorist. Pic search. | ||
||1942: Logician and philosopher Kurt Grelling and his wife arrive at Auschwitz, where they are killed in gas chambers that day or soon thereafter. Pic. | ||1942: Logician and philosopher Kurt Grelling and his wife arrive at Auschwitz, where they are killed in gas chambers that day or soon thereafter. Pic. | ||
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||1977: Paul Bernays dies ... mathematician and philosopher. Pic. | ||1977: Paul Bernays dies ... mathematician and philosopher. Pic. | ||
||1978: Rudolf Nebel dies ... spaceflight advocate active in Germany's amateur rocket group, the ''Verein für Raumschiffahrt'' (VfR – "Spaceflight Society") in the 1930s and in rebuilding German rocketry following World War II. Pic search | ||1978: Rudolf Nebel dies ... spaceflight advocate active in Germany's amateur rocket group, the ''Verein für Raumschiffahrt'' (VfR – "Spaceflight Society") in the 1930s and in rebuilding German rocketry following World War II. Pic search. | ||
||1980: Kurt Alfred Georg Mendelssohn dies ... medical physicist. Pic. | ||1980: Kurt Alfred Georg Mendelssohn dies ... medical physicist. Pic. | ||
Revision as of 18:09, 20 April 2020
1751: Mathematician, astronomer, and crime-fighter Pieter van Musschenbroek uses a grid of Leyden jars to detect and prevent crimes against mathematical constants.
1783: Mathematician and physicist Leonhard Euler dies. He made important and influential discoveries in many branches of mathematics, and introduced much of the modern mathematical terminology and notation, such as the notion of a mathematical function.
1913: Jazz drummer and theoretical physicist Albert Einstein performs at charity concert to benefit victims of crimes against mathematical constants.
1947: The majority of the provisions of the National Security Act, which establishes The National Security Council and the Central Intelligence Agency, come into effect, the day after the Senate confirmed James Forrestal as the first Secretary of Defense.
1967: Physicist, academic, and Nobel Prize laureate John Cockcroft dies. He was instrumental in the development of nuclear power.
1976: Public servant and alleged time-traveller The Custodian tells a funny story about why you can't go in there.
1977: Voyager 1 takes first photograph of the Earth and the Moon together.
1978: Electrical engineer and crime-fighter Florence Violet McKenzie publishes memoirs, reveals that she received messages from AESOP during the Second World War.
2016: Red Spiral 3 voted Picture of the Day by the citizens of New Minneapolis, Canada.