Template:Selected anniversaries/April 20: Difference between revisions
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||1745: Philippe Pinel born ... physician and psychiatrist. Pic. | ||1745: Philippe Pinel born ... physician and psychiatrist. Pic. | ||
||1809: James David Forbes born ... physicist and glaciologist who worked extensively on the conduction of heat and seismology. He invented the seismometer. Pic. | ||1809: James David Forbes born ... physicist and glaciologist who worked extensively on the conduction of heat and seismology. He invented the seismometer. Pic. | ||
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||1957: Konrad Knopp dies ... mathematician who worked on generalized limits and complex functions. Pic. | ||1957: Konrad Knopp dies ... mathematician who worked on generalized limits and complex functions. Pic. | ||
File:Bay of Pigs.jpg|link=Bay of Pigs Invasion (nonfiction)|1961: Failure of the [[Bay of Pigs Invasion (nonfiction)|Bay of Pigs Invasion]] of US-backed Cuban exiles against Cuba. | File:Bay of Pigs.jpg|link=Bay of Pigs Invasion (nonfiction)|1961: Failure of the [[Bay of Pigs Invasion (nonfiction)|Bay of Pigs Invasion]] of US-backed Cuban exiles against Cuba. | ||
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||2006: Mathematician and academic Paul Moritz Cohn dies ... author of many textbooks on algebra. His work was mostly in the area of algebra, especially non-commutative rings. Pic. | ||2006: Mathematician and academic Paul Moritz Cohn dies ... author of many textbooks on algebra. His work was mostly in the area of algebra, especially non-commutative rings. Pic. | ||
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Revision as of 19:13, 26 January 2022
1653: Oliver Cromwell dissolves the Rump Parliament.
1902: Pierre and Marie Curie refine radium chloride.
1918: Physicist and academic Karl Ferdinand Braun dies. Braun contributed significantly to the development of radio and television technology, sharing the 1909 Nobel Prize in Physics with Guglielmo Marconi "for their contributions to the development of wireless telegraphy".
1932: Mathematician Giuseppe Peano dies. He did pioneering work in mathematical logic and set theory.
1933: Art critic and alleged time-traveller The Eel is caught in the act of cracking a safe.
1945: Mathematician Georg Feigl dies. He worked on the foundations of geometry and topology, studying fixed point theorems for n-dimensional manifolds. Feigl was one of the initial authors of the Mathematisches Wörterbuch.
1961: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.
1962: Traces of Clandestiphrine residue are detected at the Bay of Pigs, raising questions about CIA involvement with transdimensional drugs.