Aug 252016

Film photography began with a mercury-silver amalgam, and ended with strips of nitrocellulose, silver iodide, and dyes. Along the way, there were some very odd chemistries going on in the world of photography, from ferric and silver salts to the prussian blue found in Cyanotypes and blueprints. Metal salts are…
Source: Hackaday Prize Entry: A Printer For Alternative Photography

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