1871 | Photography
Photography
British inventor Richard L. (Leach) Maddox, 55, makes an emulsion of silver bromide using gelatin in place of collodion (see Sayce and Bolton, 1864). Gelatin emulsions reduce the exposure time a photographer needs from 15 seconds to as little as 1/200th of a second, and Maddox's lead will be followed by J. Kennett, who will market a dry, washed emulsion that a photographer can dissolve in water and use as a coating on glass to produce his or her own photographic plates (see Bolton, 1874).