Template:Selected anniversaries/August 21: Difference between revisions

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||Charles Frédéric Gerhardt (b. 21 August 1816) was a French chemist.
||Charles Frédéric Gerhardt (b. 21 August 1816) was a French chemist.
||1826: Karl Gegenbaur born ... anatomist and professor who demonstrated that the field of comparative anatomy offers important evidence supporting of the theory of evolution. From studies in embryology, he asserted that all eggs are simple cells (1861) as suggested earlier by Schwann (1838). Pic.


||1836 – Claude-Louis Navier, French physicist and engineer (b. 1785)
||1836 – Claude-Louis Navier, French physicist and engineer (b. 1785)
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||1957 – The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.
||1957 – The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.
||1901: Edward Copson born ... mathematician known for his studies in classical analysis, differential and integral equations, and their use in mathematical physics. After graduating from Oxford University with a B.A. degree in 1922, he moved to Scotland where he spent the nearly all of his career. His first book, The Theory of Functions of a Complex Variable (1935) was immediately successful. He was a co-author for his next book, The Mathematical Theory of Huygens' Principle (1939). By 1975, he had published four more books, on asymptotic expansions, metric spaces and partial differential equations. Many of the papers he wrote bridged mathematics and physics, of which his last showed his interest in astrophysics, Electrostatics in a Gravitational Field (1978) which was relevant to Black Holes. Pic: https://ro.wikipedia.org/wiki/Edward_Thomas_Copson


File:Mars Observer diagram.png|link=Mars Observer (nonfiction)|1993: NASA loses contact with the [[Mars Observer (nonfiction)|Mars Observer]].
File:Mars Observer diagram.png|link=Mars Observer (nonfiction)|1993: NASA loses contact with the [[Mars Observer (nonfiction)|Mars Observer]].

Revision as of 07:18, 16 August 2018