Chemigram

A chemigram (from "chemistry" and gramma, Greek for "things written") is an experimental piece of art where an image is made by painting with chemicals on light-sensitive paper (such as photographic paper).

Chemigrams were invented in the 1950s by Belgian artist Pierre Cordier.

Johann Schulze is regarded as the first to obtain a chemigram-like image; in 1725, he produced such a work using opaque paper and a bottle of silver salts. Hippolyte Bayard produced another chemigram-like image during sensitization tests he conducted in 1839. In the 1930s and 1940s, the German Edmund Kesting and the French Maurice Tabard produced pictures by painting with developer and fixer on photographic paper. It is the Belgian artist Pierre Cordier (born 1933), however, who has been most responsible for developing and exploring chemigrams. From his early days, in 1956, he was one of its rare practitioners, and contributed to its development by expanding its technical and esthetic possibilities. He adopted the name chimigramme in French in 1958 (chemigram in English and Dutch, Chemigramm in German, chimigramma in Italian, and quimigrama in Spanish and Portuguese), the most widely accepted designation today. In 1974 Josef H. Neumann advanced the process in his chemograms by incorporating optical elements before applying chemicals.

A chemigram is made by painting with chemicals on photographic paper and lies within the general domain of experimentation in the visual arts. It requires the use of materials from silver halide-based photography (light-sensitive paper, developer, and fixer), but it is not a photograph. Like the photogram, the chemigram is made without a camera, yet it is created in full light instead of in the darkness of the darkroom. For this reason it is not "light that writes" (photo graphein in the Greek) but rather "chemistry that writes".

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