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  2. Reciprocity (photography) - Wikipedia

    en.wikipedia.org/wiki/Reciprocity_(photography)

    In photography, reciprocity refers to the relationship whereby the total light energy – proportional to the total exposure, the product of the light intensity and exposure time, controlled by aperture and shutter speed, respectively – determines the effect of the light on the film. That is, an increase of brightness by a certain factor is ...

  3. Photographic emulsion - Wikipedia

    en.wikipedia.org/wiki/Photographic_emulsion

    Photographic emulsion is a light-sensitive colloid used in film-based photography. Most commonly, in silver-gelatin photography , it consists of silver halide crystals dispersed in gelatin . The emulsion is usually coated onto a substrate of glass , films (of cellulose nitrate , cellulose acetate or polyester ), paper, or fabric.

  4. Photographic hypersensitization - Wikipedia

    en.wikipedia.org/wiki/Photographic_hyper...

    A developable photographic latent image forms when crystals of silver halide in an emulsion layer are exposed to light. The initial nucleation phase is chemically and thermodynamically unstable; it is thus temperature sensitive, and involves the production of one, or very few silver atoms as sub-latent image specks in each silver halide crystal.

  5. Film badge dosimeter - Wikipedia

    en.wikipedia.org/wiki/Film_badge_dosimeter

    The film emulsion is black and white photographic film with varying grain size to affect its sensitivity to incident radiation such as gamma rays, X-rays and beta particles. [2] After use by the wearer, the film is removed, developed, and examined to measure exposure. When the film is irradiated, an image of the protective case is projected on ...

  6. Exposure (photography) - Wikipedia

    en.wikipedia.org/wiki/Exposure_(photography)

    Exposure is a combination of the length of time and the illuminance at the photosensitive material. Exposure time is controlled in a camera by shutter speed, and the illuminance depends on the lens aperture and the scene luminance. Slower shutter speeds (exposing the medium for a longer period of time), greater lens apertures (admitting more ...

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  9. Robbie Baldwin - Wikipedia

    en.wikipedia.org/wiki/Robbie_Baldwin

    Robert "Robbie" Baldwin is a superhero appearing in American comic books published by Marvel Comics.Created by artist Steve Ditko and writer Tom DeFalco, the character first appeared in The Amazing Spider-Man Annual #22 (January 1988) originally known as Speedball, [1] as well as in Civil War: Front Line #10 (January 2007) as Penance.