-
1 kaliumbichromaat
• potassium bichromate -
2 двухромовокислый калий
-
3 бихромат
хромпик; бихромат калия — potassium bichromate
-
4 двухромовокислый калий
-
5 бихромат калия
-
6 хромпик
potassium bichromate
(двухромовокислое кали)Русско-английский сборник авиационно-технических терминов > хромпик
-
7 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 -
8 бихромат калия
1) General subject: bichromate2) Engineering: potassium dichromate3) Chemistry: bichromate of potash, bichrome, potassium bichromate4) General subject: kali bichromium -
9 хромпик
-
10 хромпик
м. potassium bichromate, potassium dichromateхромпик; бихромат калия — potassium bichromate
-
11 Pouncy, John
SUBJECT AREA: Photography, film and optics[br]b. 1820 Englandd. 1894 Dorchester (?), Dorset, England[br]English photographer and pioneer of the gum bichromate permanent printing process.[br]A professional photographer working from a studio in Dorchester, Pouncy had a long interest in "permanent" photographs. In 1857 he published two volumes of photolithographed views of Dorset. He was later to devise a number of variations of the photolithographic process.Pouncy is best remembered for his pigment process, patented in 1858, using vegetable carbon, gum arabic and potassium bichromate. His prints exhibited at the London Photographic Society the same year were greatly admired. However, Pouncy's gum bichromate process was, in fact, covered by earlier patents filed by Poitevin, but this did not deter Pouncy from submitting his prints to the Duke of Lyne's competition for permanent photographs in 1859. For the excellence of his work, Pouncy was awarded the lesser part of the major prize won by Poitevin. Although Pouncy's work was not original, he pioneered the carbon process in England and can be considered the practical founder of the different technique of gum bichromate printing.[br]Bibliography10 April 1858, British patent no. 780 (gum bichromate permanent printing process).Further ReadingJohn Werge, 1890, The Evolution of Photography, London (an interesting contemporary account of Pouncy's work).J.M.Eder, 1945, History of Photography, trans. E. Epstean, New York.H.Gernshiem and A.Gernsheim, 1969, The History of Photography, rev. edn, London. G.Wakeman, 1973, Victorian Book Illustration, Great Britain (a good popular account of Pouncy's work).JW -
12 двухромовокислый калий
Chemistry: bichromate, bichrome, potassium bichromate, potassium dichromateУниверсальный русско-английский словарь > двухромовокислый калий
-
13 хромпик
1) General subject: bichromate2) Geology: chromic iron3) Engineering: potassium bichromate4) Chemistry: bichrome, potassium dichromate5) Metallurgy: cleaning mixture6) Fishery: chromic sulphuric acid mixture -
14 bicromato di potassio
[CHIM]potassium bichromate, bichromate of potash -
15 двухромовокислое кали
Chemistry: potassium bichromate, potassium dichromateУниверсальный русско-английский словарь > двухромовокислое кали
-
16 Lundstrom, Johan E.
[br]fl. c. 1855 Sweden[br]Swedish scientist credited with the invention of the safety match, first produced in 1855.[br]Lundstrom's safety match replaced the friction match, popularly called the "strike-anywhere" match because all the ingredients for ignition were contained in the match head so that any abrasive surface would suffice for striking. These matches ignited easily, in fact too readily, so causing numerous accidents.It was Professor Anton von Schrötter's discovery of amorphous red phosphorus in 1845 that led to the invention of Lundstrom's safety match. The substance was much less dangerous to handle than the yellow phosphorus that was earlier in use and which had so badly damaged the health of match-factory workers who had to handle it.In Lundstrom's safety match the chemical constituents for ignition were divided between the match head and the striking surface of the matchbox, so markedly reducing the chances of spontaneous combustion. Lundstrom's patent mixtures were: Match-head: 32 parts potassium nitrate, 12 parts potassium bichromate, 32 parts red lead, 24 parts sulphide of antimony.Rubbing Surface: 8 parts red phosphorous, 9 parts sulphide of antimony.[br]Further ReadingW.T.O'Dea, 1964, Making Fire, London: Science Museum, HMSO (illustrated booklet).See also the Bryant \& May permanent exhibition in the Domestic Appliances Gallery of the Science Museum, London.DY -
17 калиевый хромпик
Textile: potassium bichromate -
18 калий двухромокислый
Fishery: potassium bichromateУниверсальный русско-английский словарь > калий двухромокислый
См. также в других словарях:
potassium bichromate — n POTASSIUM DICHROMATE … Medical dictionary
potassium bichromate — noun see potassium dichromate * * * Chem. See potassium dichromate … Useful english dictionary
potassium bichromate — Chem. See potassium dichromate. * * * … Universalium
Potassium dichromate — Potassium dichromate … Wikipedia
Bichromate — Bi*chro mate, n. [Pref. bi + chromate.] (Chem.) A salt containing two parts of chromic acid to one of the other ingredients; as, potassium bichromate; called also {dichromate}. [1913 Webster] … The Collaborative International Dictionary of English
potassium dichromate — n a soluble salt K2Cr2O7 forming large orange red crystals that is used as an oxidizing agent and in the Golgi method of staining nerve tissue called also potassium bichromate * * * K2Cr2O7, an oxidizing agent used in Zenker fixative and other… … Medical dictionary
potassium dichromate — noun an orange red salt used in making dyes and in photography • Hypernyms: ↑salt * * * noun or potassium bichromate : a bitter poisonous orange red crystalline salt K2Cr2O7 used chiefly in sensitizing gelatin in photography, in textile and… … Useful english dictionary
potassium dichromate — noun A potassium salt of chromic acid, KCrO; the orange crystals are soluble in water, and it is used as an oxidizing agent and in photography. Syn: potassium bichromate … Wiktionary
potassium dichromate — Chem. an orange red, crystalline, water soluble, poisonous powder, K2Cr2O7, used chiefly in dyeing, photography, and as a laboratory reagent. Also called potassium bichromate. [1880 85] * * * … Universalium
POTASSIUM — Le potassium, troisième élément de ce groupe, possède les propriétés caractéristiques des métaux alcalins. Il a été découvert en 1807 par Humphry Davy lors de la réduction électrolytique de la potasse caustique fondue (KOH). Son symbole chimique… … Encyclopédie Universelle
bichromate — [ bikrɔmat ] n. m. • 1838; de bi et chromate ♦ Chim. Sel oxydant de l acide chromique renfermant le groupe Cr2 O7 (de charge négative). ● bichromate nom masculin Sel renfermant l anion bivalent Cr2O72−. bichromate n. m. CHIM Sel de l acide… … Encyclopédie Universelle