<Ol> <Li> The film may be soaked in water to swell the gelatin layer , facilitating the action of the subsequent chemical treatments . </Li> <Li> The developer converts the latent image to macroscopic particles of metallic silver . </Li> <Li> A stop bath , typically a dilute solution of acetic acid or citric acid , halts the action of the developer . A rinse with clean water may be substituted . </Li> <Li> The fixer makes the image permanent and light - resistant by dissolving remaining silver halide . A common fixer is hypo , specifically ammonium thiosulfate . </Li> <Li> Washing in clean water removes any remaining fixer . Residual fixer can corrode the silver image , leading to discolouration , staining and fading . </Li> </Ol>
<Ol> <Li> The film may be soaked in water to swell the gelatin layer , facilitating the action of the subsequent chemical treatments . </Li> <Li> The developer converts the latent image to macroscopic particles of metallic silver . </Li> <Li> A stop bath , typically a dilute solution of acetic acid or citric acid , halts the action of the developer . A rinse with clean water may be substituted . </Li> <Li> The fixer makes the image permanent and light - resistant by dissolving remaining silver halide . A common fixer is hypo , specifically ammonium thiosulfate . </Li> <Li> Washing in clean water removes any remaining fixer . Residual fixer can corrode the silver image , leading to discolouration , staining and fading . </Li> </Ol>
which chemical makes it possible for a photograph to be exposed to be open to white light
which chemical makes it possible for a photograph to be exposed to be open to white light
silver halide
silver halide