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| | File:Joseph_Fourier.jpg|link=Joseph Fourier (nonfiction)|1768: Mathematician and physicist [[Joseph Fourier (nonfiction)|Joseph Fourier]] born. Fourier will initiate the investigation of Fourier series and their applications to problems of heat transfer and vibrations. |
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| ||1762 – Nicolas Louis de Lacaille, French priest, astronomer, and academic (b. 1713) | | File:George_David_Birkhoff.jpg|link=George David Birkhoff (nonfiction)|1884: Mathematician [[George David Birkhoff (nonfiction)|George David Birkhoff]] born. Birkhoff will become one of the most important leaders in American mathematics of his generation. |
| ||Abbé Nicolas Louis de La Caille, sometimes spelled Lacaille, (d. 21 March 1762) was a French astronomer. | |
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| ||Armand Jean François Séguin or Segouin (b. 21 March 1767) was a French chemist and physiologist who discovered a faster and cheaper process for tanning leather. As a result, he became immensely rich through the supply of leather to Napoleon's armies. | | File:Harry Lehmann.jpg|link=Harry Lehmann (nonfiction)|1924: Physicist [[Harry Lehmann (nonfiction)|Harry Lehmann]] born. Lehmann will contribute to the LSZ reduction formula and the Källén–Lehmann spectral representation. |
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| File:Joseph_Fourier.jpg|link=Joseph Fourier (nonfiction)|1768: Mathematician and physicist [[Joseph Fourier (nonfiction)|Joseph Fourier]] born. He will initiate the investigation of Fourier series and their applications to problems of heat transfer and vibrations. | | File:Charles Lindbergh.jpg|link=Charles Lindbergh (nonfiction)|1928: [[Charles Lindbergh (nonfiction)|Charles Lindbergh]] is presented with the Medal of Honor for the first solo trans-Atlantic flight. |
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| ||1772 – Jacques-Nicolas Bellin, French geographer and cartographer (b. 1703)
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| ||Cosimo Alessandro Collini (d. 21 March 1806) was an Italian historian and Voltaire's secretary from 1752 to 1756. Pic.
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| ||1866 – Antonia Maury, American astronomer and astrophysicist (d. 1952)
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| ||Arthur Batcheller (b. March 21, 1888) was a pioneer in early radio. Pic.
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| File:Mark Twain Interviews Wallace War-Heels.jpg|link=Mark Twain Interviews Wallace War-Heels|1882: Mark Twain admits to experiencing great fear during his famous [[Mark Twain Interviews Wallace War-Heels|interview with Wallace War-Heels]].
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| File:George_David_Birkhoff.jpg|link=George David Birkhoff (nonfiction)|1884: Mathematician [[George David Birkhoff (nonfiction)|George David Birkhoff]] born. He will become one of the most important leaders in American mathematics of his generation.
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| ||Rudolf Nebel (b. 21 March 1894) was a 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.
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| ||1896 – Friedrich Waismann, Jewish-Austrian mathematician, physicist, and philosopher from the Vienna Circle (d. 1959). No pic.
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| File:Tesla with ray gun.jpg|link=Nikola Tesla|1901: Physicist, inventor, and crime-fighter [[Nikola Tesla]] predicts that mathematician [[George David Birkhoff (nonfiction)|George David Birkhoff]] will be "one of the great [[Crimes against mathematical constants|crime fighters]] of his generation."
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| ||1911 – Walter Lincoln Hawkins, African-American scientist and inventor (d. 1992)
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| ||Guillermo Haro Barraza (b. 21 March 1913) was a Mexican astronomer. Through his own astronomical research and the formation of new institutions, Haro was influential in the development of modern observational astronomy in Mexico. Internationally, he is best known for his contribution to the discovery of Herbig–Haro objects. Pic.
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| ||1923 – Nizar Qabbani, Syrian poet, publisher, and diplomat (d. 1998)
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| File:Harry Lehmann.jpg|link=Harry Lehmann (nonfiction)|1924: Physicist [[Harry Lehmann (nonfiction)|Harry Lehmann]] born. He will contribute to the LSZ reduction formula and the Källén–Lehmann spectral representation.
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| ||1925 – The Butler Act prohibits the teaching of human evolution in Tennessee.
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| ||1927 – Halton Arp, American-German astronomer and critic (d. 2013)
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| ||1928 – Charles Lindbergh is presented with the Medal of Honor for the first solo trans-Atlantic flight.
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| ||1931 – Clark L. Brundin, American-English engineer and academic
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| ||1932 – Walter Gilbert, American physicist and chemist, Nobel Prize laureate
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| ||1934: Thomas Muir dies ... mathematician, remembered as an authority on determinants. Pic: https://commons.wikimedia.org/wiki/File:Thomas_Muir_Mathematician.jpg
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| ||Thomas William Hungerford (b. March 21, 1936) was an American mathematician who worked in algebra and mathematics education. Pic.
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| ||1942 – Patcha Ramachandra Rao, India metallurgist, educator and administrator (d. 2010)
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| ||1943 – Wehrmacht officer Rudolf von Gersdorff plots to assassinate Adolf Hitler by using a suicide bomb, but the plan falls through; von Gersdorff is able to defuse the bomb in time and avoid suspicion.
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| ||1954: Pál Selényi dies. Pic.
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| File:Vandal Savage Field Report Small Boy.jpg|link=Vandal Savage (nonfiction)|1963: Film rights to ''Field Report Number One'' by [[Vandal Savage (nonfiction)|Vandal Savage Press]] sell for nearly a million dollars.
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| File:Ranger spacecraft.jpg|link=Ranger 9 (nonfiction)|1965: NASA launches [[Ranger 9 (nonfiction)|Ranger 9]], the last in a series of unmanned lunar space probes. | | File:Ranger spacecraft.jpg|link=Ranger 9 (nonfiction)|1965: NASA launches [[Ranger 9 (nonfiction)|Ranger 9]], the last in a series of unmanned lunar space probes. |
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| ||1970 – The first Earth Day proclamation is issued by Joseph Alioto, Mayor of San Francisco.
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| ||1980 – Peter Stoner, American mathematician and astronomer (b. 1888). No pic.
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| ||1980 – US President Jimmy Carter announces a United States boycott of the 1980 Summer Olympics in Moscow to protest the Soviet war in Afghanistan.
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| ||1983 – The first cases of the 1983 West Bank fainting epidemic begin; Israelis and Palestinians accuse each other of poison gas, but the cause is later determined mostly to be psychosomatic.
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| ||Rose Pauline Peltesohn (d. 21 March 1998 in Kfar Saba, Israel) was an Israeli mathematician. She solved the Difference Problems of Lothar Heffter (de) (1896) in combinatorics in 1939. Pic.
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| ||1999 – Bertrand Piccard and Brian Jones become the first to circumnavigate the Earth in a hot air balloon.
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| ||Thierry Aubin (d. 21 March 2009) was a French mathematician who worked at the Centre de Mathématiques de Jussieu, and was a leading expert on Riemannian geometry and non-linear partial differential equations. Pic.
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| ||2012 – Yuri Razuvaev, Russian chess player and trainer (b. 1945)
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| ||2015 – Hans Erni, Swiss painter, sculptor, and illustrator (b. 1909)
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| </gallery> | | </gallery> |
