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The Chemistry Of Photography Science Essays

Michael Shorrock The chemistry of Photography Summary: Joseph-Nicephore Niepce took he word’s first photographs in 1824. Many people don’t know that he was the person who invented photography; they think that a Frenchman named Daguerre was the inventor but he got the idea from Niepce. Jacqueline Belloni, a chemist at the University of Paris-South at Orsay, is doing research on “holes” in halide ions. The problem with “holes” is that they gobble up light-generated electrons. Belloni reasoned that the solution was to dope the film. The dopant would be a negatively charged ion, like halide, so it could substitute for halide in the crystal lattice. Instead of needing ten photons a crystal doped with formate does the job with two. A benefit to consumers will be that it will make high-speed film less grainy and better quality. Rene De Keyzer, a chemist at Agfa-Geveart helps fund Belloni’s research, predicts Agfe will have doped films on the market within four years. Film emulsions today are a million times better at capturing photons but they still have a long way to go. 3 Things Learned: ~$10 single use camera has 10 times better resolution than today’s $1000 digital camera. ~There are 10 billion crystals in a frame of ordinary film. ~The first camera invented was a cubical wooden box about a foot on a side and the film was a tin or stone plate coated in asphalt. Response: I think this article was interesting I never realized how complicated it is to develop a photograph. I think it would be incredible to be able to see one of the first photo’s Niepce ever made. Word Count: 272

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