Template:Selected anniversaries/January 9: Difference between revisions
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||1864: Vladimir Steklov born ... mathematician and physicist. Pic. | ||1864: Vladimir Steklov born ... mathematician and physicist. Pic. | ||
||1868: S. P. L. Sørensen born ... chemist and academic. | ||1868: S. P. L. Sørensen born ... chemist and academic ... famous for the introduction of the concept of pH, a scale for measuring acidity and alkalinity. Pic. | ||
||1869: Richard Wilhelm Heinrich Abegg born ... chemist and pioneer of valence theory. He proposed that the difference of the maximum positive and negative valence of an element tends to be eight. This has come to be known as Abegg's rule. Pic. | ||1869: Richard Wilhelm Heinrich Abegg born ... chemist and pioneer of valence theory. He proposed that the difference of the maximum positive and negative valence of an element tends to be eight. This has come to be known as Abegg's rule. Pic. | ||
||1870: Joseph Strauss born ... engineer, co-designed the Golden Gate Bridge. | ||1870: Joseph Strauss born ... engineer, co-designed the Golden Gate Bridge. Pic (statue). | ||
||1888: George Washington Morey born ... geochemist, physical chemist, mineralogist, and petrologist, known for the "Morey bomb" used in hydrothermal research. Pic: https://library.gl.ciw.edu/GLHistory/pgmorey.html | ||1888: George Washington Morey born ... geochemist, physical chemist, mineralogist, and petrologist, known for the "Morey bomb" used in hydrothermal research. Pic: https://library.gl.ciw.edu/GLHistory/pgmorey.html | ||
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File:Telephone exchange operator circa 1900.jpg|link=Telephone switchboard (nonfiction)|1894: New England Telephone and Telegraph installs the first battery-operated [[Telephone switchboard (nonfiction)|telephone switchboard]] in Lexington, Massachusetts. (Shown here: another telephone exchange circa 1900.) | File:Telephone exchange operator circa 1900.jpg|link=Telephone switchboard (nonfiction)|1894: New England Telephone and Telegraph installs the first battery-operated [[Telephone switchboard (nonfiction)|telephone switchboard]] in Lexington, Massachusetts. (Shown here: another telephone exchange circa 1900.) | ||
||1901: Chic Young born ... cartoonist. | ||1901: Chic Young born ... cartoonist: Blondie. Pic. | ||
||1905: Louise Michel dies ... teacher and important figure in the Paris Commune. Following her penal transportation she embraced anarchism. When returning to France she emerged as important French anarchist and went on speaking tours across Europe. The journalist Brian Doherty has called her the "French grande dame of anarchy" and "Red Virgin". Pic. | ||1905: Louise Michel dies ... teacher and important figure in the Paris Commune. Following her penal transportation she embraced anarchism. When returning to France she emerged as important French anarchist and went on speaking tours across Europe. The journalist Brian Doherty has called her the "French grande dame of anarchy" and "Red Virgin". Pic. | ||
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||1923: Vasilii Vladimirov born ... mathematician and mathematical physicist working in the fields of number theory, mathematical physics, quantum field theory, numerical analysis, generalized functions, several complex variables, p-adic analysis, multidimensional tauberian theorems. Pic. | ||1923: Vasilii Vladimirov born ... mathematician and mathematical physicist working in the fields of number theory, mathematical physics, quantum field theory, numerical analysis, generalized functions, several complex variables, p-adic analysis, multidimensional tauberian theorems. Pic. | ||
||1923: Juan de la Cierva makes the first autogyro flight. | ||1923: Juan de la Cierva makes the first autogyro flight. Pic. | ||
||1933: Kate Gleason dies ... engineer, businesswoman, and philanthropist. Pic. | |||
||1938: C. P. Ramanujam born ... mathematician and academic. Pic: http://www.indiaonline.in/about/personalities/scientists/cp-ramanujam | ||1938: C. P. Ramanujam born ... mathematician and academic. Pic: http://www.indiaonline.in/about/personalities/scientists/cp-ramanujam | ||
Revision as of 08:02, 25 November 2019
1799: Mathematician, philosopher, theologian, and humanitarian Maria Gaetana Agnesi dies. She is credited with writing the first book discussing both differential and integral calculus.
1848: Astronomer Caroline Herschel dies. She discovered several comets, including the periodic comet 35P/Herschel-Rigollet, which bears her name.
1894: New England Telephone and Telegraph installs the first battery-operated telephone switchboard in Lexington, Massachusetts. (Shown here: another telephone exchange circa 1900.)
2004: Mathematician and entomologist Peter Twinn born. During the Second World War, he will be the first professional mathematician recruited by the British Government Code and Cypher School. Twinn will also be first British cryptographer to read a German military Enigma message, having obtained vital information from Polish cryptanalysts in July 1939. Twinn will say that "It was a trifling exercise, but I repeat for the umpteenth time, no credit to me."
1917: Mathematician and philosopher Georg Cantor publishes new theory of sets derived from Gnomon algorithm functions. Colleagues hail it as "a magisterial contribution to science and art of detecting and preventing crimes against mathematical constants."
1918: Scientist, inventor, and educator Charles-Émile Reynaud dies. He invented the Praxinoscope (an improved zoetrope) and was responsible for the first projected animated films.
1955: Mathematician and criminologist J. H. C. Whitehead publishes a new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1989: Mathematician Marshall Harvey Stone dies. He contributed to real analysis, functional analysis, topology, and the study of Boolean algebra structures.
2018: The Museum of Greedy algorithms runs over budget, demands emergency bailout from APTO (Algorithmic Paradigm Treaty Organization).
2020: Reaching voted Picture of the Day by the citizens of New Minneapolis, Canada.