processing
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| 4 stages of processing | development,fixing,washing,drying
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| what is the purpose of development? | to convert an invisible image to latent image
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| exposed silver halide grains are reduced to what? | metallic silver
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| good developer acts more quickly on exposed grains or unexposed grains? | exposed
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| if given sufficient time in developer, all Ag halide is reduced to what? | silver
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| when unexposed crystals are reduced it creates? | fog
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| development provides | optical density and radiographic contrast
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| silver bromide grain is surrounded by a barrier to protect it from what? | electrons in the developing solution
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| exposed silver bromide grains possess a weakness in he charge barrier caused by what? | presence of neutral silver atoms which have collected at the sensitivity speck
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| the development center enables electrons from the developer to do what? | penetrate the grain and reduce all its silver ions to metallic silver
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| elevated temperature and high pH concentration in the developer causes ? | chemical fog
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| chemical fog results in ? | increased density and decreased contrast
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| what happens when the developer becomes oxidized? | the developer becomes depleted of electrons
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| when no development takes place but there is a reaction with atmospheric oxygen, this is called? | aerial oxidation
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| how does aerial oxidation affect the supply of reducing agent? | the supply becomes exhausted
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