The daguerreotype is an early type of
photograph, developed by
Louis Daguerre, in which the image is exposed directly onto a
mirror-polished surface of
silver bearing a coating of
silver halide particles deposited by
iodine vapor. In later developments
bromine and
chlorine vapors were also used, resulting in shorter exposure times. The daguerreotype is a negative image, but the mirrored surface of the metal plate reflects the image and makes it appear positive in the proper light. Thus, daguerreotypy is a direct photographic process without the capacity for duplication.
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DAGHERROTIPO. DAGHERROTIPIA
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