Template:Selected anniversaries/April 12: Difference between revisions

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File:Johannes Kepler 1610.jpg|link=Johannes Kepler (nonfiction)|1604: [[Johannes Kepler (nonfiction)|Johannes Kepler]] discovers new class of [[crimes against mathematical constants]].
File:Johannes Kepler 1610.jpg|link=Johannes Kepler (nonfiction)|1604: [[Johannes Kepler (nonfiction)|Johannes Kepler]] discovers new class of [[crimes against mathematical constants]].
||1794 – Germinal Pierre Dandelin, Belgian mathematician and engineer (d. 1847)


File:A la mémoire de J.M. Jacquard.jpg|link=Joseph Marie Jacquard (nonfiction)|1805: Emperor Napoleon and Empress Josephine visit Lyon and viewed [[Joseph Marie Jacquard (nonfiction)|Joseph Marie Jacquard]]'s new [[Jacquard loom (nonfiction)|programmable loom]].
File:A la mémoire de J.M. Jacquard.jpg|link=Joseph Marie Jacquard (nonfiction)|1805: Emperor Napoleon and Empress Josephine visit Lyon and viewed [[Joseph Marie Jacquard (nonfiction)|Joseph Marie Jacquard]]'s new [[Jacquard loom (nonfiction)|programmable loom]].


File:Charles Messier.jpg|link=Charles Messier (nonfiction)|1817: Astronomer [[Charles Messier (nonfiction)|Charles Messier]] dies. He published an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 "Messier objects".
File:Charles Messier.jpg|link=Charles Messier (nonfiction)|1817: Astronomer [[Charles Messier (nonfiction)|Charles Messier]] dies. He published an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 "Messier objects".
||1851 – Edward Walter Maunder, English astronomer and author (d. 1928)


File:Carl Louis Ferdinand von Lindemann.jpg|link=Ferdinand von Lindemann (nonfiction)|1852: Mathematician and academic [[Ferdinand von Lindemann (nonfiction)|Ferdinand von Lindemann]] born. He will prove (1882) that π (pi) is a transcendental number.
File:Carl Louis Ferdinand von Lindemann.jpg|link=Ferdinand von Lindemann (nonfiction)|1852: Mathematician and academic [[Ferdinand von Lindemann (nonfiction)|Ferdinand von Lindemann]] born. He will prove (1882) that π (pi) is a transcendental number.
||Marie Alfred Cornu (d. April 12, 1902) was a French physicist. The French generally refer to him as Alfred Cornu. His work mainly concerned optics and spectroscopy. He carried out a classical redetermination of the speed of light by A. H. L. Fizeau's method (see Fizeau-Foucault Apparatus), introducing various improvements in the apparatus, which added greatly to the accuracy of the results.
||1862 – American Civil War: The Andrews Raid (the Great Locomotive Chase) occurs, starting from Big Shanty, Georgia (now Kennesaw).
||1884 – Otto Meyerhof, German physician and biochemist, Nobel Prize laureate (d. 1951)
||1927 – Shanghai massacre of 1927: Chiang Kai-shek orders the Communist Party of China members executed in Shanghai, ending the First United Front.
||1937 – Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England.
||1945 – U.S. President Franklin D. Roosevelt dies in office; Vice President Harry S. Truman becomes President upon Roosevelt's death.


File:Project Diana antenna.jpg|link=Project Diana (nonfiction)|1947: The United States Army Signal Corps uses [[Project Diana (nonfiction)|Project Diana]] antenna to manufacture high-grade [[clandestiphrine]].
File:Project Diana antenna.jpg|link=Project Diana (nonfiction)|1947: The United States Army Signal Corps uses [[Project Diana (nonfiction)|Project Diana]] antenna to manufacture high-grade [[clandestiphrine]].
||1955 – The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective.


File:Yuri Gagarin Vostok1.jpg|link=Yuri Gagarin (nonfiction)|1961: Soviet cosmonaut [[Yuri Gagarin (nonfiction)|Yuri Gagarin]] becomes the first human to travel into outer space and perform the first manned orbital flight (Vostok 1).
File:Yuri Gagarin Vostok1.jpg|link=Yuri Gagarin (nonfiction)|1961: Soviet cosmonaut [[Yuri Gagarin (nonfiction)|Yuri Gagarin]] becomes the first human to travel into outer space and perform the first manned orbital flight (Vostok 1).
||1963 – The Soviet nuclear-powered submarine K-33 collides with the Finnish merchant vessel M/S Finnclipper in the Danish straits.
||1970 – Soviet submarine K-8, carrying four nuclear torpedoes, sinks in the Bay of Biscay four days after a fire on board.
||1981 – The first launch of a Space Shuttle (Columbia) takes place: The STS-1 mission.
||2013 – Robert Byrne, American chess player and author (b. 1928)


File:Zero knowledge proof.png|link=Zero-knowledge proof (nonfiction)|2016: Advances in [[Zero-knowledge proof (nonfiction)|zero-knowledge proof]] theory "are central to the problem of mathematical reliability," says mathematician and crime-fighter [[Alice Beta]].
File:Zero knowledge proof.png|link=Zero-knowledge proof (nonfiction)|2016: Advances in [[Zero-knowledge proof (nonfiction)|zero-knowledge proof]] theory "are central to the problem of mathematical reliability," says mathematician and crime-fighter [[Alice Beta]].

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