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:Wilhelm_Schickard_1632.jpg|link=Wilhelm Schickard (nonfiction)|1592: Minister, scholar, astronomer, mathematician, cartographer, and inventor [[Wilhelm Schickard (nonfiction)|Wilhelm Schickard]] born.  He will design and build calculating machines, and invent techniques for producing improved maps.
File:J. Robert Oppenheimer.jpg|link=J. Robert Oppenheimer (nonfiction)|1904: American physicist and academic [[J. Robert Oppenheimer (nonfiction)|J. Robert Oppenheimer]] dies. 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:Ascleplius Myrmidon Ypres ruins 1915.jpg|link=Asclepius Myrmidon|1915: Scientist and combat surgeon [[Asclepius Myrmidon]] provides emergency medical services during a series of chemical warfare attacks in western Europe.
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, and the first prediction of quantum tunneling. Oppenheimer will be called the "father of the atomic bomb" for his role in the Manhattan Project.
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:J._R._Oppenheimer.jpg|link=J. R. Oppenheimer|1953: Singer-physicist [[J. R. Oppenheimer]] performs his hit song "Destroyer of Worlds" at the Grand Ole Opry, leading to his being summoned before the [[House Un-American Activities Committee (nonfiction)|House Un-American Activities Committee]].
 
File:McCarthy Cohn 1954.jpg|link=Army–McCarthy hearings (nonfiction)|1954: Red Scare: Witnesses begin testifying and live television coverage of the [[Army–McCarthy hearings (nonfiction)|Army–McCarthy]] hearings begins.
 
File:Earth Day Flag.png|link=Earth Day (nonfiction)|1970: The first [[Earth Day (nonfiction)|Earth Day]] is celebrated.
 
Optical_fibers.jpg|link=Optical fiber (nonfiction)|1978: [[Optical fiber (nonfiction)|Optical fiber]] is first used to carry live [[Telephone (nonfiction)|telephone]] traffic.
 
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Latest revision as of 06:01, 21 April 2022

  • 1592: Minister, scholar, astronomer, mathematician, cartographer, and inventor Wilhelm Schickard born. He will design and build calculating machines, and invent techniques for producing improved maps.

    1592: Minister, scholar, astronomer, mathematician, cartographer, and inventor Wilhelm Schickard born. He will design and build calculating machines, and invent techniques for producing improved maps.

  • 1904: American physicist and academic J. Robert Oppenheimer born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, and the first prediction of quantum tunneling. Oppenheimer will be called the "father of the atomic bomb" for his role in the Manhattan Project.

    1904: American physicist and academic J. Robert Oppenheimer born. His achievements in physics will include the Born–Oppenheimer approximation for molecular wavefunctions, and the first prediction of quantum tunneling. Oppenheimer will be called the "father of the atomic bomb" for his role in the Manhattan Project.

  • 1953: Singer-physicist J. R. Oppenheimer performs his hit song "Destroyer of Worlds" at the Grand Ole Opry, leading to his being summoned before the House Un-American Activities Committee.

    1953: Singer-physicist J. R. Oppenheimer performs his hit song "Destroyer of Worlds" at the Grand Ole Opry, leading to his being summoned before the House Un-American Activities Committee.

  • 1954: Red Scare: Witnesses begin testifying and live television coverage of the Army–McCarthy hearings begins.

    1954: Red Scare: Witnesses begin testifying and live television coverage of the Army–McCarthy hearings begins.

  • 1970: The first Earth Day is celebrated.

    1970: The first Earth Day is celebrated.

  • 1978: Optical fiber is first used to carry live telephone traffic.

    1978: Optical fiber is first used to carry live telephone traffic.

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