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| || *** DONE: Pics ***
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| File:Eclipse.jpg|link=Eclipse of Odysseus (nonfiction)|1178 BC: A solar eclipse occurs. Homer's ''Odyssey'' contains a passage which may reference the eclipse: "The Sun has been obliterated from the sky, and an unlucky darkness invades the world." | | File:Eclipse.jpg|link=Eclipse of Odysseus (nonfiction)|1178 BC: A solar eclipse occurs. Homer's ''Odyssey'' contains a passage which may reference the eclipse: "The Sun has been obliterated from the sky, and an unlucky darkness invades the world." |
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| File:Petrus Apianus.jpg|link=Petrus Apianus (nonfiction)|1495: Mathematician and astronomer [[Petrus Apianus (nonfiction)|Petrus Apianus]] born. Apianus' works on cosmography, ''Astronomicum Caesareum'' (1540) and ''Cosmographicus liber'' (1524), will be extremely influential in his time. | | File:Petrus Apianus.jpg|link=Petrus Apianus (nonfiction)|1495: Mathematician and astronomer [[Petrus Apianus (nonfiction)|Petrus Apianus]] born. Apianus' works on cosmography, ''Astronomicum Caesareum'' (1540) and ''Cosmographicus liber'' (1524), will be extremely influential in his time. |
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| File:Gottfried Wilhelm Leibniz.jpg|link=Gottfried Wilhelm Leibniz (nonfiction)|1673: [[Gottfried Wilhelm Leibniz (nonfiction)|Leibniz]] wrote to Oldenburg about series: "I conjecture that Mr. Collins himself does not speak of these summations of infinite series because he brings forward the example of the series 1/2, 1/3, 1/4, 1/5, 1/6, ... which if it is continued to infinity cannot be summed because the sum is not finite, like the sum of the triangular numbers, but infinite. But now I am cramped by the space of my paper."
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| File:Red Eyes Fighting.jpg|link=Red Eyes|1676: Philosopher and crime-fighter ''[[Red Eyes]]'' stops gang of [[Crimes against mathematical constants|math criminals]] from kidnapping [[Gottfried Wilhelm Leibniz (nonfiction)|Leibniz]].
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| File:John_Hadley.jpg|link=John Hadley (nonfiction)|1682: Mathematician [[John Hadley (nonfiction)|John Hadley]] born. Hadley will lay claim to the invention of the octant, two years after Thomas Godfrey claims the same. Hadley will also develope ways to make precision aspheric and parabolic objective mirrors for reflecting telescopes. | | File:John_Hadley.jpg|link=John Hadley (nonfiction)|1682: Mathematician [[John Hadley (nonfiction)|John Hadley]] born. Hadley will lay claim to the invention of the octant, two years after Thomas Godfrey claims the same. Hadley will also develope ways to make precision aspheric and parabolic objective mirrors for reflecting telescopes. |
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| File:Sir Isaac Newton by Sir Godfrey Kneller.jpg|link=Isaac Newton (nonfiction)|1705: Physicist and mathematician [[Isaac Newton (nonfiction)|Isaac Newton]] knighted by Queen Anne at Trinity College.
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| ||1728: Joseph Black born ... physician and chemist ... known for his discoveries of magnesium, latent heat, specific heat, and carbon dioxide. Pic.
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| ||1756: Jacques Cassini dies ... astronomer. Pic.
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| ||1760: Sigismund Friedrich Hermbstädt born ... pharmacist and chemist who wielded great influence on the improvement of science education for pharmacists. He also made numerous contributions in the fields of industrial and agricultural chemistry. Pic (cool).
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| ||1783: Christian Mayer dies ... astronomer and educator. He is most noted for pioneering the study of binary stars, although his equipment was ill-suitable for distinguishing between true binaries and coincident star alignments. In 1777-78 he compiled a catalog of 80 double stars, which he published in 1781. Pic.
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| ||1788: Georges-Louis Leclerc, Comte de Buffon dies ... mathematician, cosmologist, and author. Pic.
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| ||1816: Benjamin Jesty dies ... was a farmer at Yetminster in Dorset, England, notable for his early experiment in inducing immunity against smallpox using cowpox. Pic.
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| ||1820: Victor Puiseux born ... mathematician and astronomer. Puiseux series are named after him, as is in part the Bertrand–Diquet–Puiseux theorem. Pic.
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| ||1823: Gotthold Eisenstein born ... mathematician and academic ... specialized in number theory and analysis, and proved several results that eluded even Gauss. Pic.
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| ||1859: William Lofland Dudley born ... chemistry professor. Pic.
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| ||1863: The submarine ''Plongeur'' is launched. She was the first submarine in the world to be propelled by mechanical (rather than human) power. Pic.
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| File:Thomas_Blanchard.jpg|link=Thomas Blanchard (nonfiction)|1864:Inventor [[Thomas Blanchard (nonfiction)|Thomas Blanchard]] dies. Blanchard pioneered the assembly line style of mass production in America, and also invented the major technological innovation known as interchangeable parts.He also invented America's first car (1825), powered by steam, which he called a "horseless carriage".
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| ||1867: Wilbur Wright born ... inventor. Pic.
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| ||1881: In Dodge City, Kansas, Bat Masterson fights his last gun battle.
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| ||1888: Zygmunt Florenty Wróblewski dies ... physicist and chemist. Pic.
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| ||1891: Jenő Egerváry born ... mathematician. Egerváry generalized König's theorem to the case of weighted graphs. This contribution was translated and published in 1955 by Harold W. Kuhn, who also showed how to apply Kőnig's and Egerváry's method to solve the assignment problem; the resulting algorithm has since been known as the "Hungarian method". Pic.
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| ||1894: Jerzy Neyman born ... mathematician and statistician. Pic.
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| ||1895: Ove Arup born ... engineer and businessman, founded Arup ... Sydney Opera House. Pic.
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| ||1897: F. W. Winterbotham CBE born ... British Royal Air Force officer (latterly a Group Captain) who during World War II supervised the distribution of Ultra intelligence. His book The Ultra Secret was the first popular account of Ultra to be published in Britain. Pic.
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| ||1898: Hellmuth Kneser born ... mathematician, who made notable contributions to group theory and topology. His most famous result may be his theorem on the existence of a prime decomposition for 3-manifolds. His proof originated the concept of normal surface, a fundamental cornerstone of the theory of 3-manifolds. Pic.
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| ||1899: Osman Achmatowicz born ... chemist and academic. He devised a new method of degradation using hydrogenolysis of quaternary ammonium salts containing nitrogen in allyl position, in the presence of palladinized charcoal as catalyst. This method became crucial in studies on organic compounds and was subsequently modified by other research workers over rupture of carbon-oxygen bonds. Pic.
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| ||1907: Joseph-Armand Bombardier born ... inventor and businessman, founded Bombardier Inc. Pic.
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| ||1914: George William Hill dies ... ... astronomer and mathematician. Working independently and largely in isolation from the wider scientific community, he made major contributions to celestial mechanics and to the theory of ordinary differential equations. Pic.
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| ||1919: Thomas Willmore born ... geometer and academic. He contributed to Riemannian 3-space and harmonic spaces. Pic.
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| ||1929: Ralph Slatyer born ... biologist and ecologist ... first Chief Scientist of Australia from 1989 to 1992. Pic search.
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| ||1936: Vadim Kuzmin born ... physicist and academic ... leader of rock band Chyorniy Lukich. Pic search.
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| ||1943: Albert Hofmann accidentally discovers the hallucinogenic effects of the research drug LSD. He intentionally takes the drug three days later on April 19. Pic.
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| ||1947: Bernard Baruch first applies the term "Cold War" to describe the relationship between the United States and the Soviet Union. Pic.
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| ||1947: The Texas City disaster: an industrial accident ... in the Port of Texas City, Texas. It was the deadliest industrial accident in U.S. history, and one of history's largest non-nuclear explosions. Originating with a mid-morning fire on board the French-registered vessel SS Grandcamp (docked in the port), her cargo of approximately 2,200 tons (approximately 2,100 metric tons) of ammonium nitrate detonated, initiating a subsequent chain-reaction of additional fires and explosions in other ships and nearby oil-storage facilities. It killed at least 581 people, including all but one member of the Texas City fire department. The disaster triggered the first ever class action lawsuit against the United States government, under the then-recently enacted Federal Tort Claims Act (FTCA), on behalf of 8,485 victims. Pic.
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| ||1957: Johnny Torrio dies ... mob boss. He helped to build a criminal organization, the Chicago Outfit, in the 1920s; it was later inherited by his protégé, Al Capone. He also put forth the idea of the National Crime Syndicate in the 1930s and later became an unofficial adviser to the Genovese crime family. Pic.
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| File:Rosalind Franklin.jpg|link=Rosalind Franklin (nonfiction)|1958: Chemist and X-ray crystallographer [[Rosalind Franklin (nonfiction)|Rosalind Franklin]] dies. Franklin made contributions to the discovery of the molecular structure of DNA (deoxyribonucleic acid).
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| File:Mk15 nuclear bomb.jpg|link=1958 Tybee Island mid-air collision (nonfiction)|1958: The United States military announces that the search for [[1958 Tybee Island mid-air collision (nonfiction)|hydrogen bomb known as the Tybee Bomb was unsuccessful]]. | | File:Mk15 nuclear bomb.jpg|link=1958 Tybee Island mid-air collision (nonfiction)|1958: The United States military announces that the search for [[1958 Tybee Island mid-air collision (nonfiction)|hydrogen bomb known as the Tybee Bomb was unsuccessful]]. |
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| ||1958: With mining and processing plants still operational, a combination of poor design, neglect, heavy rainfall and a reported earthquake caused the #7 tailings dam at Mailuu-Suu to fail. https://en.wikipedia.org/wiki/1958_Mailuu-Suu_tailings_dam_failure
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| ||1972: Apollo program: The launch of Apollo 16 from Cape Canaveral, Florida.
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| ||1998: Alberto Calderón dies ... mathematician and academic. Pic.
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| ||2001: Alfred Horn dies ... mathematician notable for his work in lattice theory and universal algebra. His 1951 paper "On sentences which are true of direct unions of algebras" described Horn clauses and Horn sentences, which later would form the foundation of logic programming. Pic.
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| File:Edward Lorenz.jpg|link=Edward Lorenz (nonfiction)|2008: Mathematician [[Edward Lorenz (nonfiction)|Edward Lorenz]] dies. Lorenz introduced the strange attractor notion, and coined the term butterfly effect. | | File:Edward Lorenz.jpg|link=Edward Lorenz (nonfiction)|2008: Mathematician [[Edward Lorenz (nonfiction)|Edward Lorenz]] dies. Lorenz introduced the strange attractor notion, and coined the term butterfly effect. |
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| File:Phaeton 9.jpg|link=Phaeton 9 (nonfiction)|2018: ''[[Phaeton 9 (nonfiction)|Phaeton 9]]'' voted Picture of the Day by the citizens of [[New Minneapolis, Canada]].
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| </gallery> | | </gallery> |
