Template:Selected anniversaries/May 21: Difference between revisions
No edit summary |
No edit summary |
||
| Line 47: | Line 47: | ||
||1894: The Manchester Ship Canal in the United Kingdom is officially opened by Queen Victoria, who later knights its designer Sir Edward Leader Williams. Pic. | ||1894: The Manchester Ship Canal in the United Kingdom is officially opened by Queen Victoria, who later knights its designer Sir Edward Leader Williams. Pic. | ||
||1897: Fritz Müller dies ... biologist who emigrated to southern Brazil, where he lived in and near the German community of Blumenau, Santa Catarina. There he studied the natural history of the Atlantic forest south of São Paulo, and was an early advocate of Darwinism. Pic (nice). | |||
||1902: Herbert Grötzsch born ... mathematician. He was born in Döbeln and died in Halle. Grötzsch worked in graph theory. He was the discoverer and eponym of the Grötzsch graph, a triangle-free graph that requires four colors in any graph coloring, and Grötzsch's theorem, the result that every triangle-free planar graph requires at most three colors. Pic. | ||1902: Herbert Grötzsch born ... mathematician. He was born in Döbeln and died in Halle. Grötzsch worked in graph theory. He was the discoverer and eponym of the Grötzsch graph, a triangle-free graph that requires four colors in any graph coloring, and Grötzsch's theorem, the result that every triangle-free planar graph requires at most three colors. Pic. | ||
| Line 56: | Line 58: | ||
||1919: Evgraf Fedorov dies ... mathematician, crystallographer, and mineralogist. Pic. | ||1919: Evgraf Fedorov dies ... mathematician, crystallographer, and mineralogist. Pic. | ||
||1921: Sandy Douglas born ... computer scientist and academic, designed OXO. Pic search | ||1921: Sandy Douglas born ... computer scientist and academic, designed OXO. Pic search. | ||
||1921: Andrei Sakharov born ... physicist and academic, Nobel Prize laureate. Pic. | ||1921: Andrei Sakharov born ... physicist and academic, Nobel Prize laureate. Pic. | ||
Revision as of 04:40, 1 February 2021
1471: Painter, engraver, and mathematician Albrecht Dürer born. Dürer will be regarded as the greatest German Renaissance artist: his vast body of work will include altarpieces and religious works, numerous portraits and self-portraits, and copper engravings.
1670: Astronomer and physicist Niccolò Zucchi dies. He published works on astronomy, optics, mechanics, and magnetism.
1686: Scientist, inventor, and politician Otto von Guericke dies. Von Guericke pioneered the physics of vacuums, and discovered an experimental method for demonstrating electrostatic repulsion.
1859: Lawyer, translator, inventor, and APTO operative Per Georg Scheutz uses his Scheutzian calculation engine to defeat the Forbidden Ratio in single combat.
1923: Mathematician and academic Armand Borel born. He will work in algebraic topology, and in the theory of Lie groups, contributing to the creation of the contemporary theory of linear algebraic groups.
1927: Charles Lindbergh touches down at Le Bourget Field in Paris, completing the world's first solo nonstop flight across the Atlantic Ocean.
1927: Pilot, engineer, and alleged time-traveler Henrietta Bolt touches down at Le Bourget Field in Paris, completing the world's first solo nonstop round-the-world flight.
1932: Amelia Earhart completes her solo nonstop flight across the Atlantic when bad weather forces her to land in Derry, Northern Ireland, after a flight lasting 14 hours, 56 minutes. Earhart is the second person (after Charles Lindbergh) to fly nonstop and alone across the Atlantic.
1946: Physicist Louis Slotin is fatally irradiated in a criticality incident during an experiment with the so-called "demon core" at Los Alamos National Laboratory.
1953: Logician and mathematician Ernst Friedrich Ferdinand Zermelo dies. His work had major implications for the foundations of mathematics; he is known for his role in developing Zermelo–Fraenkel axiomatic set theory, and for his proof of the well-ordering theorem.
1964: Chemist, former military officer, and Gnomon algorithm theorist Myrtle Bachelder uses metallochemistry device to defeat the Forbidden Ratio in single combat.
2016: Wheel of Fire 2 is voted Picture of the Day by the citizens of New Minneapolis, Canada.