Скачать с ютуб History of Photography: 4. Sir John Herschel by Vladimir Khazan Scientist Polymath Sir John Herschel в хорошем качестве

History of Photography: 4. Sir John Herschel by Vladimir Khazan Scientist Polymath Sir John Herschel

Sir John Herschel, son of Mary Pitt and British astronomer William Herschel, was born in Slough, Buckinghamshire, England in 1792. He was multitalented: math, astronomy, natural sciences, and music. 1839: Coined terms photography, negative, and positive . 1839: Made a photograph on glass 1842: Invented cyanotype (iron) blueprints. Experimented with photosensitive emulsions of vegetable juices, called phytotypes (plants) aka anthotypes (flowers), and published his discoveries in the Philosophical Transactions of the Royal Society of London in 1842. Sir John Herschel, Baronet: Applied the terms negative, positive, and emulsion to photography. 1819: Discovered sodium thiosulfate to be a solvent of silver halides, experimentally applied it in early 1839. Informed Daguerre and Talbot of his discovery that "hyposulphite of soda" ("hypo") could be used as a photographic “fixer”, to make pictures permanent. 1839:Herschel invented sensitized paper and glass processes. Made the first glass negative. 1842: Created phytotypes - colorized images -“ Vegetable Photographs”. John Herschel From Wikipedia, the free encyclopedia Sir John Herschel Bt KH FRS John Herschel 1846 (cropped).png Drawing of John Herschel, published in 1846 Born 7 March 1792[1] Slough, Buckinghamshire, England Died 11 May 1871 (aged 79)[1] Collingwood, near Hawkhurst, Kent, England Resting place Westminster Abbey Nationality British Education Eton College Alma mater St John's College, Cambridge Known for The invention of photography Awards Smith's Prize (1813) Copley Medal (1821) Lalande Medal (1825) Gold Medal of the Royal Astronomical Society (1826, 1836) Royal Medal (1836, 1840) Knight of the Royal Guelphic Order Scientific career Influences William Herschel (father), Caroline Herschel (aunt) Sir John Frederick William Herschel, 1st Baronet KH FRS (/ˈhɜːrʃəl, ˈhɛər-/;[2] 7 March 1792 – 11 May 1871)[1] was an English polymath, mathematician, astronomer, chemist, inventor, experimental photographer who invented the blueprint,[3][4][5] and did botanical work.[6] Herschel originated the use of the Julian day system in astronomy. He named seven moons of Saturn and four moons of Uranus – the seventh planet, discovered by his father Sir William Herschel. He made many contributions to the science of photography, and investigated colour blindness and the chemical power of ultraviolet rays. His Preliminary Discourse (1831), which advocated an inductive approach to scientific experiment and theory-building, was an important contribution to the philosophy of science.[7]