* Astronomy

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Sir Owen Willans Richardson, FRS (26 April 1879 - 15 February 1959) was a British physicist who won the Nobel Prize in Physics in 1928 for his work on thermionic emission, which led to Richardson's Law. Read more

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David Hume (7 May [O.S. 26 April] 1711 - 25 August 1776) was a Scottish philosopher, historian, economist, and essayist, known especially for his philosophical empiricism and skepticism. He was one of the most important figures in the history of Western philosophy and the Scottish Enlightenment...

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Felix Alexandrovich Berezin (25 April 1931 - 14 July 1980) was a Soviet Russian mathematician and physicist known for his contributions to the theory of supersymmetry and supermanifolds as well as to the path integral formulation of quantum field theory. Read more

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Gérard Henri de Vaucouleurs (25 April 1918 - 7 October 1995) was a French astronomer. He specialised in the study of galaxies and was co-author of the Third Reference Catalogue of Bright Galaxies. His specialty included reanalysing Hubble and Sandage's galaxy atlas and recomputing the distance m...

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James Ferguson (25 April 1710 - 17 November 1776) was a Scottish astronomer and instrument maker. Ferguson was born near Rothiemay in Banffshire of humble parents. Read more

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Vladimir Mikhaylovich Komarov (16 March 1927 - 24 April 1967) was a Soviet test pilot, aerospace engineer, and cosmonaut in the first group of cosmonauts selected in 1960. Read more

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Saint George (ca. 275/281 - 23 April 303) was, according to tradition, a Roman soldier from Syria Palaestina and a priest in the Guard of Diocletian, who is venerated as a Christian martyr. Read more

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Rev. Dr. Thomas Romney Robinson (23 April 1792 - 28 February 1882) was an astronomer and physicist. He was the longtime director of the Armagh Astronomical Observatory, one of the chief astronomical observatories in the U.K. during the 19th century. Read more

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Sir Harold Jeffreys, FRS (22 April 1891 - 18 March 1989) was a mathematician, statistician, geophysicist, and astronomer. His seminal book Theory of Probability, which first appeared in 1939, played an important role in the revival of the Bayesian view of probability. Read more

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Pedro Alvares Cabral; c. 1467 or 1468 - c. 1520) was a Portuguese noble, military commander, navigator and explorer regarded as the discoverer of Brazil. Seaweed was sighted on 21 April, which led the sailors to believe that they were nearing the coast. They were proven correct the next afternoon, W...

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Jean-Baptiste Biot (21 April 1774 - 3 February 1862) was a French physicist, astronomer, and mathematician who established the reality of meteorites, made an early balloon flight, and studied the polarisation of light. Read more

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Percy Williams Bridgman (21 April 1882 - 20 August 1961) was an American physicist who won the 1946 Nobel Prize in Physics for his work on the physics of high pressures. He also wrote extensively on the scientific method and on other aspects of the philosophy of science. Read more

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John Muir (21 April 1838 - 24 December 1914) was a Scottish-born American naturalist, author, and early advocate of preservation of wilderness in the United States. His letters, essays, and books telling of his adventures in nature, especially in the Sierra Nevada mountains of California, have b...

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George A. Cowan (Worcester, February 15, 1920 - April 20, 2012) was an American physical chemist, a businessman and philanthropist. He conducted early research in the Manhattan Project. George served 39 years at Los Alamos National Laboratory as director of chemistry, associate director of res...

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Dr. Tessy Thomas (born in 1964) is the Key Scientist for Agni-V in Defence Research and Development Organisation, Hyderabad. She is the first woman scientist to head a missile project in India. Read more

Topic		Started By	Replies	Last Post
	Sir Owen Willans Richardson (1879 - 1959) (Preview) Sir Owen Willans Richardson, FRS (26 April 1879 - 15 February 1959) was a British physicist who won the Nobel Prize in Physics in 1928 for his work on thermionic emission, which led to Richardson's Law. Read more	Blobrana	0	Apr 26 06:20 2012 by Blobrana
	David Hume (1711 - 1776) (Preview) David Hume (7 May [O.S. 26 April] 1711 - 25 August 1776) was a Scottish philosopher, historian, economist, and essayist, known especially for his philosophical empiricism and skepticism. He was one of the most important figures in the history of Western philosophy and the Scottish Enlightenment...	Blobrana	0	Apr 25 23:19 2012 by Blobrana
	Felix Berezin (1931 - 1980) (Preview) Felix Alexandrovich Berezin (25 April 1931 - 14 July 1980) was a Soviet Russian mathematician and physicist known for his contributions to the theory of supersymmetry and supermanifolds as well as to the path integral formulation of quantum field theory. Read more	Blobrana	0	Apr 25 06:07 2012 by Blobrana
	Gérard de Vaucouleurs (1918 - 1995) (Preview) Gérard Henri de Vaucouleurs (25 April 1918 - 7 October 1995) was a French astronomer. He specialised in the study of galaxies and was co-author of the Third Reference Catalogue of Bright Galaxies. His specialty included reanalysing Hubble and Sandage's galaxy atlas and recomputing the distance m...	Blobrana	0	Apr 25 06:07 2012 by Blobrana
	James Ferguson (1710-1776) (Preview) James Ferguson (25 April 1710 - 17 November 1776) was a Scottish astronomer and instrument maker. Ferguson was born near Rothiemay in Banffshire of humble parents. Read more	Blobrana	0	Apr 25 06:05 2012 by Blobrana
	Vladimir Mikhaylovich Komarov (1927 - 1967) (Preview) Vladimir Mikhaylovich Komarov (16 March 1927 - 24 April 1967) was a Soviet test pilot, aerospace engineer, and cosmonaut in the first group of cosmonauts selected in 1960. Read more	Blobrana	1	Apr 24 06:39 2012 by Blobrana
	Saint George (Preview) Saint George (ca. 275/281 - 23 April 303) was, according to tradition, a Roman soldier from Syria Palaestina and a priest in the Guard of Diocletian, who is venerated as a Christian martyr. Read more	Blobrana	1	Apr 23 06:14 2012 by Blobrana
	Rev. Dr. Thomas Romney Robinson (1792 - 1882) (Preview) Rev. Dr. Thomas Romney Robinson (23 April 1792 - 28 February 1882) was an astronomer and physicist. He was the longtime director of the Armagh Astronomical Observatory, one of the chief astronomical observatories in the U.K. during the 19th century. Read more	Blobrana	0	Apr 23 06:09 2012 by Blobrana
	Sir Harold Jeffreys (1891 - 1989) (Preview) Sir Harold Jeffreys, FRS (22 April 1891 - 18 March 1989) was a mathematician, statistician, geophysicist, and astronomer. His seminal book Theory of Probability, which first appeared in 1939, played an important role in the revival of the Bayesian view of probability. Read more	Blobrana	0	Apr 22 08:00 2012 by Blobrana
	Pedro Alvares Cabral (Preview) Pedro Alvares Cabral; c. 1467 or 1468 - c. 1520) was a Portuguese noble, military commander, navigator and explorer regarded as the discoverer of Brazil. Seaweed was sighted on 21 April, which led the sailors to believe that they were nearing the coast. They were proven correct the next afternoon, W...	Blobrana	1	Apr 22 07:54 2012 by Blobrana
	Jean-Baptiste Biot (1774 - 1862) (Preview) Jean-Baptiste Biot (21 April 1774 - 3 February 1862) was a French physicist, astronomer, and mathematician who established the reality of meteorites, made an early balloon flight, and studied the polarisation of light. Read more	Blobrana	0	Apr 20 23:11 2012 by Blobrana
	Percy Williams Bridgman (1882 - 1961) (Preview) Percy Williams Bridgman (21 April 1882 - 20 August 1961) was an American physicist who won the 1946 Nobel Prize in Physics for his work on the physics of high pressures. He also wrote extensively on the scientific method and on other aspects of the philosophy of science. Read more	Blobrana	0	Apr 21 06:10 2012 by Blobrana
	John Muir (1838 - 1914) (Preview) John Muir (21 April 1838 - 24 December 1914) was a Scottish-born American naturalist, author, and early advocate of preservation of wilderness in the United States. His letters, essays, and books telling of his adventures in nature, especially in the Sierra Nevada mountains of California, have b...	Blobrana	0	Apr 21 06:07 2012 by Blobrana
	George Cowan (1920 - 2012) (Preview) George A. Cowan (Worcester, February 15, 1920 - April 20, 2012) was an American physical chemist, a businessman and philanthropist. He conducted early research in the Manhattan Project. George served 39 years at Los Alamos National Laboratory as director of chemistry, associate director of res...	Blobrana	0	Apr 20 22:20 2012 by Blobrana
	Dr. Tessy Thomas (Preview) Dr. Tessy Thomas (born in 1964) is the Key Scientist for Agni-V in Defence Research and Development Organisation, Hyderabad. She is the first woman scientist to head a missile project in India. Read more	Blobrana	1	Apr 20 16:41 2012 by Blobrana
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