Friday, August 27, 2010

Wife + Husband

6th plate daguerreotype from around 1850

Louis Daguerre called his invention "daguerreotype." His method consisted of treating silver-plated copper sheets with iodine to make them sensitive to light, then exposing them in a camera and "developing" the images with warm mercury vapor. The fumes from the mercury vapor combined with the silver to produce an image. The plate was washed with a saline solution to prevent further exposure.


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