gum bichromate process: meaning, definition, pronunciation and examples
Very LowSpecialized Technical/Artistic
Quick answer
What does “gum bichromate process” mean?
A photographic printing process using gum arabic, potassium bichromate, and pigments, where light hardens the gum to create an image.
Audio
Pronunciation
Definition
Meaning and Definition
A photographic printing process using gum arabic, potassium bichromate, and pigments, where light hardens the gum to create an image.
A 19th-century alternative photographic technique valued for its painterly, artistic quality, allowing for hand-coloring and manipulation, revived by contemporary artists.
Dialectal Variation
British vs American Usage
Differences
The chemical component 'bichromate' is sometimes referred to as 'dichromate' in both varieties, with no significant regional preference for one term over the other in this phrase.
Connotations
Identical connotations of historical technique, artistry, and manual craft.
Frequency
Extremely rare in both, confined to historical texts, photography manuals, and fine art discourse.
Grammar
How to Use “gum bichromate process” in a Sentence
[Artist/Photographer] + [verb: used/employed/mastered] + the gum bichromate process + [to create/for] + [noun phrase: a print/artwork]Vocabulary
Collocations
Examples
Examples of “gum bichromate process” in a Sentence
adjective
British English
- The gum-bichromate workshop attracted many alternative process enthusiasts.
- She is known for her gum-bichromate portfolio.
American English
- The gum-bichromate workshop attracted many alternative process enthusiasts.
- She is known for her gum-bichromate portfolio.
Usage
Meaning in Context
Business
Not used.
Academic
Used in art history, history of photography, and material culture studies to describe a specific 19th/early 20th-century technique.
Everyday
Virtually never used.
Technical
Used precisely in alternative process photography workshops, manuals, and among practitioners to denote the specific chemical method.
Vocabulary
Synonyms of “gum bichromate process”
Strong
Neutral
Weak
Vocabulary
Antonyms of “gum bichromate process”
Watch out
Common Mistakes When Using “gum bichromate process”
- Mispronouncing 'bichromate' as /ˈbɪkrəmeɪt/ (bick-ro-mate) instead of /baɪˈkroʊmeɪt/ (by-crow-mate).
- Confusing it with the cyanotype ('blueprint') process.
- Omitting 'process' and just saying 'gum bichromate', which can be ambiguous.
FAQ
Frequently Asked Questions
Yes, primarily by fine art photographers and artists specializing in historical/alternative photographic processes who value its unique, hand-crafted aesthetic.
It refers to potassium bichromate (also called dichromate), the light-sensitive chemical that hardens the gum arabic upon exposure to ultraviolet light.
Yes, by applying successive layers of gum mixed with different coloured pigments, each exposed to a different separation negative. It is a complex and time-consuming method.
A gum print has a much more textured, matte, and often uneven appearance resembling a watercolour or pastel drawing, as the image is formed in pigment suspended in gum, not in metallic silver or dyes.
A photographic printing process using gum arabic, potassium bichromate, and pigments, where light hardens the gum to create an image.
Gum bichromate process is usually specialized technical/artistic in register.
Gum bichromate process: in British English it is pronounced /ˌɡʌm ˌbaɪˈkrəʊmeɪt ˈprəʊses/, and in American English it is pronounced /ˌɡʌm ˌbaɪˈkroʊmeɪt ˈprɑːses/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: GUMMY paint (gum arabic) with BI-cycle CHROME (bichromate) plates, in a slow PROCESS to make a picture.
Conceptual Metaphor
PAINTING WITH LIGHT (as the process combines painting/brushing with photographic exposure).
Practice
Quiz
What is the primary binder used in the gum bichromate process?