Template:Selected anniversaries/August 21: Difference between revisions
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File:Subrahmanyan Chandrasekhar.png|link=Subrahmanyan Chandrasekhar (nonfiction)|1910: Astrophysicist, astronomer, and mathematician [[Subrahmanyan Chandrasekhar (nonfiction)|Subrahmanyan Chandrasekhar]] born. He will share the 1983 Nobel Prize for Physics "for his theoretical studies of the physical processes of importance to the structure and evolution of the stars". | File:Subrahmanyan Chandrasekhar.png|link=Subrahmanyan Chandrasekhar (nonfiction)|1910: Astrophysicist, astronomer, and mathematician [[Subrahmanyan Chandrasekhar (nonfiction)|Subrahmanyan Chandrasekhar]] born. He will share the 1983 Nobel Prize for Physics "for his theoretical studies of the physical processes of importance to the structure and evolution of the stars". | ||
||1910: Mathematician Ted Youngs born. Youngs worked in geometric topology; he is famous for the Ringel–Youngs theorem which proved the Heawood conjecture, a problem closely related to the Four color theorem for surfaces of higher genus. Pic search | ||1910: Mathematician Ted Youngs born. Youngs worked in geometric topology; he is famous for the Ringel–Youngs theorem which proved the Heawood conjecture, a problem closely related to the Four color theorem for surfaces of higher genus. Pic search. | ||
||1911: The Mona Lisa is stolen by a Louvre employee. | ||1911: The Mona Lisa is stolen by a Louvre employee. | ||
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||1915: Robert Furman born ... engineer and intelligence officer ... chief of foreign intelligence for the Manhattan Engineer District directing espionage against the German nuclear energy project. He participated in the Alsos Mission, which conducted a series of operations with the intent to place all uranium in Europe into Allied hands, and at the end of the war rounded up German atomic scientists to keep them out of the Soviet Union. He personally escorted half of the uranium-235 necessary for the Little Boy atomic bomb to the Pacific island of Tinian. He was also a key figure overseeing the construction of The Pentagon building. Pic. | ||1915: Robert Furman born ... engineer and intelligence officer ... chief of foreign intelligence for the Manhattan Engineer District directing espionage against the German nuclear energy project. He participated in the Alsos Mission, which conducted a series of operations with the intent to place all uranium in Europe into Allied hands, and at the end of the war rounded up German atomic scientists to keep them out of the Soviet Union. He personally escorted half of the uranium-235 necessary for the Little Boy atomic bomb to the Pacific island of Tinian. He was also a key figure overseeing the construction of The Pentagon building. Pic. | ||
||1916: Engineer Hans-Georg Münzberg born ... specialized in airplane turbines and space flight. He taught at the TU Berlin, the TH Munich, and wrote textbooks. Pic search | ||1916: Engineer Hans-Georg Münzberg born ... specialized in airplane turbines and space flight. He taught at the TU Berlin, the TH Munich, and wrote textbooks. Pic search. | ||
||1918: Bruria Kaufman born ... theoretical physicist. She is known for contributions to Albert Einstein's general theory of relativity, to statistical physics, where she used applied spinor analysis to rederive the result of Lars Onsager on the partition function of the two-dimensional Ising Model, and to the study of the Mössbauer effect, on which she collaborated with John von Neumann and Harry Lipkin. Pic. | ||1918: Bruria Kaufman born ... theoretical physicist. She is known for contributions to Albert Einstein's general theory of relativity, to statistical physics, where she used applied spinor analysis to rederive the result of Lars Onsager on the partition function of the two-dimensional Ising Model, and to the study of the Mössbauer effect, on which she collaborated with John von Neumann and Harry Lipkin. Pic. | ||
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||1933: Leon Lichtenstein dies ... mathematician, who made contributions to the areas of differential equations, conformal mapping, and potential theory. He was also interested in theoretical physics, publishing research in hydrodynamics and astronomy. | ||1933: Leon Lichtenstein dies ... mathematician, who made contributions to the areas of differential equations, conformal mapping, and potential theory. He was also interested in theoretical physics, publishing research in hydrodynamics and astronomy. | ||
File:Harry Daghlian.gif|link=Harry Daghlian (nonfiction)|1945: Physicist [[Harry Daghlian (nonfiction)|Harry Daghlian]] is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory. | File:Harry Daghlian.gif|link=Harry Daghlian (nonfiction)|1945: Physicist [[Harry Daghlian (nonfiction)|Harry Daghlian]] is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory. | ||
||1957: Harald Sverdrup dies ... meteorologist and oceanographer known for his studies of the physics, chemistry, and biology of the oceans. He explained the equatorial countercurrents and helped develop the method of predicting surf and breakers. As scientific director of Roald Amundsen's polar expedition on Maud (1918-1925), Sverdrup worked extensively on meteorology, magnetics, atmospheric electricity, physical oceanography, and tidal dynamics on the Siberian shelf, and even on the anthropology of Chukchi natives. In 1953, Sverdrup quantified the concept of "critical depth", explaining the onset of the spring phytoplankton bloom in newly stratified water columns. Pic. | ||1957: Harald Sverdrup dies ... meteorologist and oceanographer known for his studies of the physics, chemistry, and biology of the oceans. He explained the equatorial countercurrents and helped develop the method of predicting surf and breakers. As scientific director of Roald Amundsen's polar expedition on Maud (1918-1925), Sverdrup worked extensively on meteorology, magnetics, atmospheric electricity, physical oceanography, and tidal dynamics on the Siberian shelf, and even on the anthropology of Chukchi natives. In 1953, Sverdrup quantified the concept of "critical depth", explaining the onset of the spring phytoplankton bloom in newly stratified water columns. Pic. | ||
Revision as of 04:49, 21 August 2020
1560: The occurrence at the predicted time of a solar eclipse in Copenhagen turns Tycho Brahe towards a life of observational astronomy.
1660: Physician, mathematician, and engineer Hubert Gautier born. Gautier will author the first book on bridge building, Traité des Ponts, in 1716, as well as books on roads, fortifications, antiquities, geology, and a first manual for watercolor practitioners.
1909: Mathematician and physicist Nikolay Bogolyubov born. His method of teaching, based on creation of a warm atmosphere, politeness, and kindness, will be renowned in Russia as the "Bogolyubov approach".
1910: Astrophysicist, astronomer, and mathematician Subrahmanyan Chandrasekhar born. He will share the 1983 Nobel Prize for Physics "for his theoretical studies of the physical processes of importance to the structure and evolution of the stars".
1945: Physicist Harry Daghlian is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.
1993: NASA loses contact with the Mars Observer.
2017: The destroyer USS John S. McCain collides with the tanker ship Alnic MC off the coast of Singapore, leaving ten of her crew dead and another five injured.
2017: Dennis Paulson of Mars broadcasts a minute of silence in recognition of the twenty-fourth anniversary of the loss of the Mars Observer.
2018: Toilet Bowl on the White House Lawn created.