-
1 Ponton, Mungo
SUBJECT AREA: Photography, film and optics[br]b. 1801 Balgreen, Scotlandd. 1880 Clifton, England[br]Scottish discoverer of the light sensitivity of potassium bichromate.[br]Employed as Secretary of the Bank of Scotland, Ponton was an amateur photographer and described details of experiments on the effect of light on potassium bichromate in May 1839, only months after the announcement of the first practicable photographic processes. In a paper communicated to the Society of Arts for Scotland (of which he was Vice-President), Ponton suggested that paper soaked in a solution of potassium bichromate could be used as a cheap substitute for paper coated with silver salts. Although Ponton's descriptions were received with interest, potassium bichromate was not widely employed at the time; his work was to be exploited later, however, in the development of permanent photographic and photomechanical printing processes.[br]BibliographyFor the original announcement of Ponton's work, see Edinburgh New Philosophical Journal 1839, p. 169.Further ReadingJ.M.Eder, 1945, History of Photography, trans. E.Epstean, New York.H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London.JW -
2 Photography, film and optics
See also: INDEX BY SUBJECT AREA[br]Ding HuanGabor, DennisKlic, KarolLippershey, HansMarton, LadislausTournachon, Gaspard FélixBiographical history of technology > Photography, film and optics
См. также в других словарях:
Mungo Ponton — FRS (20 November 1801 – 3 August 1880) was a Scottish inventor who in 1839 created a method of permanent photography based on sodium dichromate. Mungo was a farmer s son, born and raised in Edinburgh. He became a legal apprentice and was admitted … Wikipedia
Mungo — (also spelled Moungo) may refer to: Contents 1 People 2 Places 3 Other uses … Wikipedia
Impresión al carbono — La impresión al carbono es un antiguo procedimiento fotográfico que consiste en sumergir un tejido de carbono en una solución diluida de dicromato de potasio para obtener su sensibilización a la luz. Esta solución también incorpora carbono,… … Wikipedia Español
photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates … Universalium
Gum bichromate — is a 19th century photographic printing process based on the light sensitivity of dichromates. It is capable of rendering painterly images from photographic negatives. Gum printing is traditionally a multi layered printing process, but… … Wikipedia
Goma bicromatada — Prima Vera de Robert Demachy, 1896. La goma bicromatada es una técnica de impresión fotográfica inventada a mediados del siglo XIX. Está basada en la propiedad de las sales de cromo (principalmente bicromato potásico y amónico) que al mezclarse… … Wikipedia Español
Phototypie — (v. gr.), 1) die Kunst photographische Abbildungen zu ätzen, so daß sie durch den Druck vervielfältigt werden können; 2) die auf solche Weise erzeugten Abdrücke. Zur Vervielfältigung wird das photographische Bild entweder auf eine Metallplatte,… … Pierer's Universal-Lexikon
PHOTOGRAPHIE — La perception de l’apparence du monde matériel par notre organe visuel a comme support la lumière visible ou les autres radiations électromagnétiques, rendues visibles par l’intermédiaire de phénomènes auxiliaires. L’emploi direct de l’ensemble… … Encyclopédie Universelle
