Richard Maddox, English physician and amateur photographer, c 1870s.
4 0 c m
 
27cm
actual image size: 19cm x 32cm

Richard Maddox, English physician and amateur photographer, c 1870s.

© Science Museum / Science & Society Picture Library

Description

In 1871 Maddox (1816-1902) discovered a way to use gelatine instead of glas as the basis for photographic plates, thus inventing the first practicable gelatine silver halide emulsion. The gelatin dry-plate proces involved coating a glas plate with a gelatine mixture which held in suspension fine, light sensitive particles of silver salts.
 

Image Ref.

10302046
 

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