PHOTOGRAPHY dates back to experiments conducted in the early 1770s in England, but commercially viable photographic processes appeared simultaneously in 1839 in England and France.

Photographic Technology

L.J.M. Daguerre's invention, the daguerreotype, was purchased by the French government and presented to the world (except England, where it was patented). It was a unique image on a silver-plated copper plate. A competing process, the calotype, was developed by W.H. Fox Talbot in...

If you are already registered on KnowBC, login now to get access to the full article.

You may already have access to KnowBC through your school, university or library.

If you do not already have access to KnowBC, you can subscribe.