History

History, 26.07.2019 18:50, pennstatealum

1841 william henry patents the calotype process, exposing wet (instead of dry) paper for a much shorter amount of time with a sharper image. this is the first negative-positive process making possible the first multiple copies.

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1841 william henry patents the calotype process, exposing wet (instead of dry) paper for a much sho...

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