Louis Daguerre

Louis Daguerre

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Credit: SHEILA TERRY/SCIENCE PHOTO LIBRARY

Caption: Portrait of Louis Jaques Daguerre, (1789-1851), French chemist and photographic pioneer and inventor of the “daguerreotype”. From the1820s, partly in conjunction with the French physicist and inventor Joseph Nicephore Niepce, he devised a process which produced directly positive images on a copper plate that had been coated with silver iodide and which, after exposure, produced a positive image by exposing the plate to mercury vapour. By 1837 he had found a chemical treatment to make the image permanent and made public the details of the first widely used photographic process in 1839.

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Keywords: chemical, chemistry, copper, daguerre, daguerreotype, exposure, history of photography, images, inventor, mercury, mercury vapour, niepce, photographic, photographic pioneer, photography, plate, process, silver halide, silver iodide

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