Daguerreotype

In photography, a single-image process using mercury vapour and an iodine-sensitized silvered plate; it was invented by Louis Daguerre in 1838.

Louis Jacques Mande Daguerre 1789-1851: French pioneer of photography. Together with Joseph Niepce, he is credited with the invention on photography (though others were reaching the same point simultaneously.) In 1838 he invented the daguerreotype, a single-image process superseded 10 years later by Fox Talbot's negative/positive process. (Brockhampton)

I wonder what Daguerre would make of digital cameras and the intangible way we look at images today on computers? Still waiting for my computer to return so I can include images in my posts!!! An art blog is quite drab without visuals...