Development
Gelatin emulsions as proposed by Maddox were very sensitive to touch and mechanical friction and not much more sensitive than collodion emulsions to light.Charles Bennett discovered a method of hardening the emulsion, making it more resistant to friction in 1873. In 1878, Bennett discovered that by prolonged heating, the sensitivity of the emulsion could be greatly increased.George Eastman developed a machine to coat plates in 1879 and opened the Eastman Dry Plate Company, reducing the cost of photography. A competitor of Eastman in the development and manufacture of gelatin dry plates was the architectural photographer Albert Levy.
Read more about this topic: Dry Plate
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“Such condition of suspended judgment indeed, in its more genial development and under felicitous culture, is but the expectation, the receptivity, of the faithful scholar, determined not to foreclose what is still a question—the “philosophic temper,” in short, for which a survival of query will be still the salt of truth, even in the most absolutely ascertained knowledge.”
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