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The house at Gras, near Chalon-sur-Saône, France where French inventor Nicephore Niepce developed heliography, a technique he used to create the world's oldest surviving product of a photographic process: a print made from a photoengraved printing plate in 1825.
The house at Gras, near Chalon-sur-Saône, France where French inventor Nicéphore Niepce developed heliography, a technique he used to create the world's oldest surviving product of a photographic process: a print made from a photoengraved printing plate in 1825. From Les Merveilles de la Science, published
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