In the normal development of black and white emulsions, one does not distinguish between ″developable″ and ″nondevelopable″ grains but between grains that develop as part of the image and those that develop as fog. Discrimination between these is not determined entirely by the sizes of the latent-iamge centers. Other factors in the development process act to diminish the potential discrimination and hence the maximum photographic speed that can be obtained. Minimizing these adverse factors therefore increases the obtainable photographic speed of an emulsion. 26 refs.
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Univ London, Ctr Res Autism & Educ, Dept Psychol & Human Dev, Inst Educ, London WC1H 0AA, EnglandUniv London, Ctr Res Autism & Educ, Dept Psychol & Human Dev, Inst Educ, London WC1H 0AA, England
Manning, Catherine
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Aagten-Murphy, David
Pellicano, Elizabeth
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Univ London, Ctr Res Autism & Educ, Dept Psychol & Human Dev, Inst Educ, London WC1H 0AA, England
Univ Western Australia, Sch Psychol, Nedlands, WA 6009, AustraliaUniv London, Ctr Res Autism & Educ, Dept Psychol & Human Dev, Inst Educ, London WC1H 0AA, England