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Photographic fixer reaction

Photographic fixer reaction

A500/0226

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Credit

CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY

Caption

Photographic fixer reaction. Second of two images showing photographic fixer, sodium thiosulphate or thio, dissolving silver bromide, which is widely used in photographic film. The silver bromide appears as a cloudy solid suspended in solution in a test tube. The thio has been introduced into the bottom of the tube and is dissolving the solid. Silver bromide is used in photography because it is sensitive to light, its crystals form specks of solid silver when exposed. This process is then enhanced by a photographic developer. Thio is then used to dissolve off any unexposed silver bromide to leave a permanent negative of the original image. A500/225).

Release details

Model release not required. Property release not required.

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