A number of nonsilver photographic, or light-sensitive systems such as those based on diazo dyes, have been used or proposed for specialized purposes. None of them, as yet, exhibits the sensitivity or the wide applicability of the silver process. This survey of the current status of these systems will discuss current limitations as well as possible future prospects with particular reference to the field of motion picture engineering.
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Thomas T. Hill (1952) studied this question.
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