Dry Plate - Development

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

Famous quotes containing the word development:

    A defective voice will always preclude an artist from achieving the complete development of his art, however intelligent he may be.... The voice is an instrument which the artist must learn to use with suppleness and sureness, as if it were a limb.
    Sarah Bernhardt (1845–1923)

    I’ve always been impressed by the different paths babies take in their physical development on the way to walking. It’s rare to see a behavior that starts out with such wide natural variation, yet becomes so uniform after only a few months.
    Lawrence Kutner (20th century)

    Dissonance between family and school, therefore, is not only inevitable in a changing society; it also helps to make children more malleable and responsive to a changing world. By the same token, one could say that absolute homogeneity between family and school would reflect a static, authoritarian society and discourage creative, adaptive development in children.
    Sara Lawrence Lightfoot (20th century)