History of Photography
Emulsion refers to a mixture of two immiscible substances, such as oil and water, where one substance is dispersed in the other. In photography, emulsions are critical as they serve as the light-sensitive layer in film and photographic plates, allowing for the capture of images. The most common emulsion used in photography is silver halide crystals suspended in gelatin, which react to light exposure, forming a latent image that can later be developed into a visible photograph.
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