In a three year partnership with Neice, Louis Daguerre reworked the process of heliography. Using a complicated procedure involving silver, iodine and mercury, Daguerre eventually created the famous Daguerrotype. He originally tried taking Daguerrotypes of the streets of Paris, but was perplexed when after they developed they were free of people. Eventually he realized that the long exposure time make everything moving become invisible.
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