Template:Selected anniversaries/February 14: Difference between revisions
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||1877: Greenleaf Whittier Pickard born ... radio pioneer. He was responsible for the development of the crystal detector, (cat's whisker detector), a radio wave detector which was the central component in early radio receivers called crystal radios. He also experimented with antennas, radio wave propagation, and noise suppression. Pic. | ||1877: Greenleaf Whittier Pickard born ... radio pioneer. He was responsible for the development of the crystal detector, (cat's whisker detector), a radio wave detector which was the central component in early radio receivers called crystal radios. He also experimented with antennas, radio wave propagation, and noise suppression. Pic. | ||
||1878: Julius Nieuwland born ... priest, chemist and academic. | ||1878: Julius Nieuwland born ... priest, chemist and academic ... contributions to acetylene research and its use as the basis for one type of synthetic rubber, which eventually led to the invention of neoprene. Pic. | ||
||1888: Robert Erich Remak born | ||1888: Mathematician Robert Erich Remak born. He is chiefly remembered for his work in group theory (Remak decomposition). His other interests included algebraic number theory, mathematical economics and geometry of numbers. Died in Auschwitz. Pic: grave plaque. | ||
||1894: Eugène Charles Catalan dies ... mathematician and academic ... who worked on continued fractions, descriptive geometry, number theory and combinatorics. His notable contributions included discovering a periodic minimal surface in the space TO_DO ... stating the famous Catalan's conjecture, which was eventually proved in 2002; and, introducing the Catalan numbers to solve a combinatorial problem. Pic. | ||1894: Eugène Charles Catalan dies ... mathematician and academic ... who worked on continued fractions, descriptive geometry, number theory and combinatorics. His notable contributions included discovering a periodic minimal surface in the space TO_DO ... stating the famous Catalan's conjecture, which was eventually proved in 2002; and, introducing the Catalan numbers to solve a combinatorial problem. Pic. | ||
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||1966: Australian currency is decimalized. | ||1966: Australian currency is decimalized. | ||
||1897: Vito Genovese dies ... mob boss. Pic. | |||
||1975: Julian Huxley dies ... biologist and eugenicist, co-founded the World Wide Fund for Nature. | ||1975: Julian Huxley dies ... biologist and eugenicist, co-founded the World Wide Fund for Nature. | ||
Revision as of 18:40, 5 November 2019
1855: Texas is linked by telegraph to the rest of the United States, with the completion of a connection between New Orleans and Marshall, Texas.
1876: Alexander Graham Bell applies for a patent for the telephone, as does Elisha Gray.
1904: Engineer and inventor Charles William Oatley born. He will develop of one of the first commercial scanning electron microscopes.
1943: Mathematician David Hilbert dies. He discovered and developed a broad range of fundamental ideas in many areas, including invariant theory and the axiomatization of geometry.
1944: Physicist and academic Owen Willans Richardson uses thermionic theory to compute optimal Valentine's Day card.
1950: Physicist and engineer Karl Guthe Jansky dies. He was one of the founding figures of radio astronomy.
1951: Theoretical physicist and crime-fighter Richard Feynman uses principles of quantum electrodynamics to compose state-of-the-art Valentine's Day cards.
1990: The Voyager 1 spacecraft takes the photograph of planet Earth later become famous as Pale Blue Dot.
2017: Steganographic analysis of famed illustration Alice and Niles Dancing reveals three terabytes of love letters between mathematicians Alice Beta and Niles Cartouchian.