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bichromate

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1
Gum printing - Wikipedia
Gum printing is a way of making photographic reproductions without the use of silver halides. The process uses salts of dichromate. en.wikipedia.org
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Introduction to the gum bichromate process
The gum bichromate process, like much photomechanical printing, depends upon the reaction when a dichromate salt is mixed with an organic colloid, eg a gum or ... blog.scienceandmediamuseum.org.uk
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BICHROMATE Definition & Meaning - Merriam-Webster
The meaning of BICHROMATE is a dichromate especially of sodium or potassium. www.merriam-webster.com
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bichromate
bichromate Chem. (baɪˈkrəʊmət) [see bi- prefix2 III.] a. A salt containing two equivalents of chromic acid, e.g. the bichromate of potash, used in photography and other arts; whence biˈchromated, biˈchromatized ppl. a.1854 Scoffern in Orr's Circ. Sc. Chem. 447 Heating bichromate of potash to whitene... Oxford English Dictionary
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Category: Gum Bichromate Process - Bostick & Sullivan
Gum Bichromate Process. Home · Alternative Process Kits; Gum Bichromate Process. Shop Categories. Bostick & Sullivan Workshops · Platinum & Palladium ... www.bostick-sullivan.com
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An introduction to the gum bichromate process
A step-by-step description of the gum printing process and showcases of artists' works ranging from monochrome to colorful and from subtle to bold. www.alternativephotography.com
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Gum bichromate
Gum bichromate is a 19th-century photographic printing process based on the light sensitivity of dichromates. References External links Movie Video/ Viméo Gum Photo technical information (Wayback Machine archive) An introduction to the gum bichromate process wikipedia.org
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Gum Bichromate: How it Works - dh bloomfield photography
The light-sensitive bichromate, exposed to ultraviolet light, hardens the gum arabic in direct proportion to the amount of light that has passed through it. www.dhbloomfield.com
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The Alfred Stieglitz Collection | Gum Bichromate Print
Gum printing was invented in the 1850s. To make a print, practitioners brushed sensitized gum arabic mixed with pigment onto paper, then exposed the sheet to ... archive.artic.edu
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Light in the Dark: Gum Bichromate Printing Explored - The Image Flow
How to Make a Gum Print. I start my gum bichromate printing process with three color-separated negatives: one for cyan, one for magenta and one for yellow. With ... theimageflow.com
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A Brief History of the Gum Process - Woods Edge Photography
The gum bichromate process has been around nearly as long as photography itself, revered and reviled throughout that time. www.woodsedge.net
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bichrome
▪ I. bichrome, n.1 Chem. (ˈbaɪkrəʊm) [Shortened form of bichromate.] Bichromate of potassium or sodium. Also attrib. (see quot. 1904).1896 G. Duerr Bleaching iv. 56 The following colours..require to be passed through a solution of bichrome in order to develop or raise the colours. 1904 Westm. Gaz. 3... Oxford English Dictionary
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Acridine
Addition of potassium dichromate to this solution precipitates acridine bichromate. The bichromate is decomposed using ammonia. wikipedia.org
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metachrome
metachrome, n. and a. (ˈmɛtəkrəʊm) [f. meta- + Gr. χρῶµα colour.] A. n. A body that changes colour.1876 Chem. News 11 Feb. 60/2 The author..passed on to the classification of metachromes, which he [Ackroyd] arranges in two groups. B. adj. Dye Chem. Designating mordant dyes and their mordants that ma... Oxford English Dictionary
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Carl Erengisle Hyltén-Cavallius
processes of tanning in so far as no bark or other substances containing tannic acid is required; the tanning being effected by »Chemical salts» such as bichromate In the latter instance, the pre-tannage is followed up by a bichromate bath. wikipedia.org
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