Photography [encyclopedia](Site not responding. Last check: 2007-11-07)
Scott Archer (1813-57) in 1851 invented the collodion 'wet plate', and dry plates coated with sensitized emulsion were produced commercially in the mid-1870s, followed by celluloid-based film from 1889.
In a camera, light reaching the photo-sensitive emulsion containing silver halide crystals forms a latent (invisible) image, which can be made visible by chemical development, reducing the exposed crystals to fl metallic silver.
The remaining unaffected halide is then removed by fixing to leave a permanent negative record of the exposure.
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halide on Encyclopedia.com(Site not responding. Last check: 2007-11-07)
Durakbasa, Ayse, Halide Edib Turk Modernlesmesi ve Feminizm.
University of California Scientists Discover Plant Gene That Promotes Production of Ozone-Destroying Methyl Halides.
CTX Opto Delivers Ultraportable EzPro 580 LCD Projector with MetalHalide Light Source; True SVGA 800x600 Resolution Personal Projector Makes It The Total Solution For Mobile Presenters.
