Researches on light: an examination of all the phenomena connected with the chemical and molecular changes produced by the influence of the solar rays; embracing all the known photographic processes, and new discoveries in the art / [Robert Hunt].

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Researches on light: an examination of all the phenomena connected with the chemical and molecular changes produced by the influence of the solar rays; embracing all the known photographic processes, and new discoveries in the art / [Robert Hunt]. Public Domain Mark. Source: Wellcome Collection.