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On January 1, 1840, a strange ceremony took place in the garden of the Herschel house at Slough. On the lawn lay the 40-foot-long tube of the great reflector that William Herschel had first pointed at the heavens half a century earlier. The instrument had been out of use for over thirty years, and the enormous wooden framework from which the ...
4 de nov. de 2023 · John Herschel nomme cette technique « cyanotype ». Cyanotype de dentelle réalisé par John Herschel Il réalise lui-même des cyanotypes, publie un article pour un décrire sa découverte et en explique le fonctionnement à ses collègues et amis, notamment à Anna Atkins , botaniste et amie du scientifique, qui en deviendra une des pionnières.
12 de may. de 2021 · Born on 7 March 1792 at Observatory House, Slough, John Herschel was the only child of William and Mary Herschel. His childhood was an eclectic mix of local schooling and private tuition, especially in mathematics at which he excelled. His famous comet-hunting aunt, Caroline Herschel (1750–1848), lived nearby and the pair remained close ...
John Herschel. John Herschel, in full Sir John Frederick William Herschel, 1st Baronet, (born March 7, 1792, Slough, Buckinghamshire, Eng.—died May 11, 1871, Collingwood, Kent), English astronomer. He was the son of astronomer William Herschel. He studied at the University of Cambridge, where he met mathematicians Charles Babbage and George ...
John Herschel was the son of William Herschel, the astronomer who discovered Uranus. His mother Mary Pitt was the daughter of a wealthy merchant. She was 38 years old when she married William Herschel, her first husband and her only child having both died. When John Herschel was born in 1792 William was 55 years old and Mary was 42.
24 de ago. de 2023 · Il contributo di Sir John Herschel alla cura degli occhi . Combinando le sue conoscenze sulle lenti e sulla riflessione della luce, nel 1827 John Herschel propose uno dei primi design al mondo di lenti a contatto e condusse altre ricerche sulla vista, tra cui: Studi su diverse irregolarità corneali e sull’astigmatismo
27 de jul. de 2020 · John Herschel sigue el camino de su padre empezó con la astronomía en 1816, cuando construyó un telescopio reflector con un espejo de 45,72 cm de diámetro y 6,096 metros de largo, fue uno de los fundadores de la Real Sociedad Astronómica en 1820, siendo su presidente en tres períodos: 1827-29, 1839-41 y 1847-49, previamente entre 1821 y 1823 reexaminó junto con James South las estrellas ...
