Template:Selected anniversaries/April 22: Difference between revisions

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|File:Ludolf van Ceulen.jpg|link=Ludolph van Ceulen (nonfiction)|1561: Mathematician and fencer [[Ludolph van Ceulen (nonfiction)|Ludolph van Ceulen]] uses [[Gnomon algorithm]] techniques to prevent outbreak of [[Wumpus-compass syndrome]].
|File:Ludolf van Ceulen.jpg|link=Ludolph van Ceulen (nonfiction)|1561: Mathematician and fencer [[Ludolph van Ceulen (nonfiction)|Ludolph van Ceulen]] uses [[Gnomon algorithm]] techniques to prevent outbreak of [[Wumpus-compass syndrome]].
||1592 – Wilhelm Schickard, German astronomer and mathematician (d. 1635)
||1758 – Antoine de Jussieu, French botanist and physician (b. 1686)
||1778 – James Hargreaves, British inventor (b. 1720)
||1833 – Richard Trevithick, English engineer and explorer (b. 1771)
||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.


||Andrew Talcott (b. 1883) was an American civil engineer and close friend of Civil War General Robert E. Lee.  
||Andrew Talcott (b. 1883) was an American civil engineer and close friend of Civil War General Robert E. Lee.  
||1891 – Vittorio Jano, Italian engineer (d. 1965)
||1891 – Harold Jeffreys, English mathematician, geophysicist, and astronomer (d. 1989)
||1891 – Nicola Sacco, Italian-American anarchist (d. 1927)


File:J. Robert Oppenheimer.jpg|link=J. Robert Oppenheimer (nonfiction)|1904: American physicist and academic [[J. Robert Oppenheimer (nonfiction)|J. Robert Oppenheimer]] born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, work on the theory of electrons and positrons, the Oppenheimer–Phillips process in nuclear fusion, and the first prediction of quantum tunneling.
File:J. Robert Oppenheimer.jpg|link=J. Robert Oppenheimer (nonfiction)|1904: American physicist and academic [[J. Robert Oppenheimer (nonfiction)|J. Robert Oppenheimer]] born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, work on the theory of electrons and positrons, the Oppenheimer–Phillips process in nuclear fusion, and the first prediction of quantum tunneling.
||Norman Earl Steenrod (b. April 22, 1910) was a mathematician most widely known for his contributions to the field of algebraic topology.
||1915 – The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres.
||1916 – Hanfried Lenz, German mathematician and academic (d. 2013)
||1919 – Donald J. Cram, American chemist and academic, Nobel Prize laureate (d. 2001)
||1922 – Wolf V. Vishniac, American microbiologist and academic (d. 1973)
||1930 – The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
||1933 – Anthony Llewellyn, Welsh-American chemist and astronaut (d. 2013)
||1944 – The 1st Air Commando Group using Sikorsky R-4 helicopters stage the first use of helicopters in combat with combat search and rescue operations in the China Burma India Theater.
||1945 – Wilhelm Cauer, German mathematician and academic (b. 1900)
||1954 – Red Scare: Witnesses begin testifying and live television coverage of the Army–McCarthy hearings begins.
File:Plutonium pellet.jpg|link=Plutonium (nonfiction)|1961: [[Plutonium (nonfiction)|Plutonium]] used for [[crimes against mathematical constants]], says [[Cantor Parabola]].
File:Plutonium pellet.jpg|link=Plutonium (nonfiction)|1961: [[Plutonium (nonfiction)|Plutonium]] used for [[crimes against mathematical constants]], says [[Cantor Parabola]].
|File:The Hal Jordan Playbook.jpg|link=The Hal Jordan Playbook|1964: Publication of ''[[The Hal Jordan Playbook]]'' reveals new class of [[crimes against mathematical constants]].
|File:The Hal Jordan Playbook.jpg|link=The Hal Jordan Playbook|1964: Publication of ''[[The Hal Jordan Playbook]]'' reveals new class of [[crimes against mathematical constants]].
Optical_fibers.jpg|link=Optical fiber (nonfiction)|1977: [[Optical fiber (nonfiction)|Optical fiber]] is first used to carry live telephone traffic.
Optical_fibers.jpg|link=Optical fiber (nonfiction)|1977: [[Optical fiber (nonfiction)|Optical fiber]] is first used to carry live telephone traffic.
||1970 – The first Earth Day is celebrated.
||1972 – Vietnam War: Increased American bombing in Vietnam prompts anti-war protests in Los Angeles, New York City, and San Francisco.
||1977 – Optical fiber is first used to carry live telephone traffic.
||1980 – Fritz Strassmann, German chemist and physicist (b. 1902)
||1985 – Paul Hugh Emmett, American chemist and academic (b. 1900)
||1988 – Grigori Kuzmin, Russian-Estonian astronomer and academic (b. 1917)
||1989 – Emilio G. Segrè, Italian-American physicist and academic, Nobel Prize laureate (b. 1905)
||1999 – Munir Ahmad Khan, Pakistani-Austrian physicist and engineer (b. 1926)
||2003 – James H. Critchfield, American CIA officer (b. 1917)
||2005 – Philip Morrison, American physicist and academic (b. 1915)
||2006 – Henriette Avram, American computer scientist and academic (b. 1919)
||2012 – George Rathmann, American chemist, biologist, and businessman (b. 1927)
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Revision as of 21:05, 27 November 2017

  • 1904: American physicist and academic J. Robert Oppenheimer born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, work on the theory of electrons and positrons, the Oppenheimer–Phillips process in nuclear fusion, and the first prediction of quantum tunneling.

    1904: American physicist and academic J. Robert Oppenheimer born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, work on the theory of electrons and positrons, the Oppenheimer–Phillips process in nuclear fusion, and the first prediction of quantum tunneling.

  • 1977: Optical fiber is first used to carry live telephone traffic.

    1977: Optical fiber is first used to carry live telephone traffic.

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