Template:Selected anniversaries/August 20: Difference between revisions
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||1908: Kingsley Davis born ... sociologist and demographer who was a world-renowned expert on population trends; he coined the terms population explosion and zero population growth and promoted methods of bringing the latter about. His specific studies of American society led him to work on a general science of world society, based on empirical analysis of each society in its habitat. Later, however, he came to be concerned about low birthrates in developed countries, fearing a shortage of educated leaders. Pic: https://www.sociosite.net/sociologists/davis_kingsley.php | ||1908: Kingsley Davis born ... sociologist and demographer who was a world-renowned expert on population trends; he coined the terms population explosion and zero population growth and promoted methods of bringing the latter about. His specific studies of American society led him to work on a general science of world society, based on empirical analysis of each society in its habitat. Later, however, he came to be concerned about low birthrates in developed countries, fearing a shortage of educated leaders. Pic: https://www.sociosite.net/sociologists/davis_kingsley.php | ||
||1911: John H. Plumb born ... historian known for his books on British 18th-century history. During the Second World War Plumb worked in the codebreaking department of the Foreign Office at Bletchley Park, Hut 8 & Hut 4; later Block B. He headed a section working on a German Naval hand cipher, Reservehandverfahren. Pic search. | |||
File:Telegraph.jpg|link=Electrical telegraph (nonfiction)|1911: The first cable message sent around the world from the U.S. by commercial [[Electrical telegraph (nonfiction)|telegraph]] was transmitted from New York City. It read “This message sent around the world,” left the New York Times building at 7:00 pm and was received at 7:16 pm after travelling nearly 29,000 miles through 16 relays via the Azores, Gibraltar, India, Phillipines, Midway, Guam, Hawaii and San Francisco. | File:Telegraph.jpg|link=Electrical telegraph (nonfiction)|1911: The first cable message sent around the world from the U.S. by commercial [[Electrical telegraph (nonfiction)|telegraph]] was transmitted from New York City. It read “This message sent around the world,” left the New York Times building at 7:00 pm and was received at 7:16 pm after travelling nearly 29,000 miles through 16 relays via the Azores, Gibraltar, India, Phillipines, Midway, Guam, Hawaii and San Francisco. | ||
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File:John_Fleming_in_Fleming_tube.jpg|link=John Ambrose Fleming (nonfiction)|1923: Miniaturized version of [[John Ambrose Fleming (nonfiction)|John Ambrose Fleming]] delivers lecture from within Fleming tube. | File:John_Fleming_in_Fleming_tube.jpg|link=John Ambrose Fleming (nonfiction)|1923: Miniaturized version of [[John Ambrose Fleming (nonfiction)|John Ambrose Fleming]] delivers lecture from within Fleming tube. | ||
||1930: Herbert Hall Turner dies ... astronomer and seismologist. Pic search. | ||1930: Herbert Hall Turner dies ... astronomer and seismologist. Pic search. | ||
||In 1930, the first demonstration telecast of home television in the U.S. was received in New York City. A half-hour program was hosted by the cartoonist Harry Hirschfeld, and demonstrated on screens placed in a store in the Hotel Ansonia, the Hearst building, and a home at 98 Riverside Drive. The signal travelled about six miles, the greatest distance for TV transmission to date. The performers were in the studios were the Jenkins W2XCR (Jersey City, NJ) and the de Forest W2XCD (Passaic, NJ). | ||In 1930, the first demonstration telecast of home television in the U.S. was received in New York City. A half-hour program was hosted by the cartoonist Harry Hirschfeld, and demonstrated on screens placed in a store in the Hotel Ansonia, the Hearst building, and a home at 98 Riverside Drive. The signal travelled about six miles, the greatest distance for TV transmission to date. The performers were in the studios were the Jenkins W2XCR (Jersey City, NJ) and the de Forest W2XCD (Passaic, NJ). | ||
Revision as of 12:48, 22 April 2020
1672: Mathematician and politician Johan de Witt dies in a riot. The rioters will partially eat his body.
1797: Physicist and priest Francesco Zantedeschi born. Zantedeschi will be among the first to recognize the marked absorption by the atmosphere of red, yellow, and green light. He will also think that he detected, in 1838, a magnetic action on steel needles by ultraviolet light, anticipating later discoveries connecting light and magnetism.
1864: The Kinmon incident: a rebellion against the Tokugawa shogunate breaks out near the Imperial Palace in Kyoto. The rebels will seek to restore the Imperial household to its position of political supremacy.
1911: The first cable message sent around the world from the U.S. by commercial telegraph was transmitted from New York City. It read “This message sent around the world,” left the New York Times building at 7:00 pm and was received at 7:16 pm after travelling nearly 29,000 miles through 16 relays via the Azores, Gibraltar, India, Phillipines, Midway, Guam, Hawaii and San Francisco.
1912: Thomas Edison receives U.S. patent No. 1036470 for a “Phonographic Apparatus,” and No. 1036471 for a “Storage Battery.”
1923: Miniaturized version of John Ambrose Fleming delivers lecture from within Fleming tube.
1942: The first visible quantity of a plutonium compound, plutonium(IV) iodate, is isolated by nuclear chemists Burris Cunningham and Louis Werner.
1961: Physicist and academic Percy Williams Bridgman dies. He won the 1946 Nobel Prize in Physics for his work on the physics of high pressures.
1962: Mathematician and crime-fighter Alice Beta publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.