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  2. Checker shadow illusion - Wikipedia

    en.wikipedia.org/wiki/Checker_shadow_illusion

    The image depicts a checkerboard with light and dark squares, partly shadowed by another object. The optical illusion is that the area labeled A appears to be a darker color than the area labeled B. However, within the context of the two-dimensional image, they are of identical brightness, i.e., they would be printed with identical mixtures of ...

  3. Day shapes - Wikipedia

    en.wikipedia.org/wiki/Day_shapes

    Day shapes are black in color and their sizes are determined by the ColRegs; for example, the size of the ball is not less than 0.6 metres (2.0 ft). The vertical distance between shapes is at least 1.5 metres (4.9 ft). Vessels of less than 20 metres (66 ft) length may use shapes of smaller size commensurate with the size of the vessel. [2]

  4. Bottled gas - Wikipedia

    en.wikipedia.org/wiki/Bottled_gas

    Within Europe gas cylinders colours are being standardised according to EN 1089-3, the standard colours applying to the cylinder shoulder only; i.e., the top of the cylinder close to the pillar valve. In the United States, colour-coding is not regulated by law. The user should not rely on the colour of a cylinder to indicate what it contains.

  5. Digital printing - Wikipedia

    en.wikipedia.org/wiki/Digital_printing

    Digital cylinder printing is a method of reproducing black-and-white or full-color images and text onto cylindrical objects, typically promotional products, through use of digital imaging systems. The digital process is by definition faster than conventional screen printing , because it requires fewer production steps and less set-up time for ...

  6. Monochrome photography - Wikipedia

    en.wikipedia.org/wiki/Monochrome_photography

    Monochrome photography is photography where each position on an image can record and show a different amount of light (), but not a different color ().The majority of monochrome photographs produced today are black-and-white, either from a gelatin silver process, or as digital photography.

  7. Black-and-white - Wikipedia

    en.wikipedia.org/wiki/Black-and-white

    In computing terminology, black-and-white is sometimes used to refer to a binary image consisting solely of pure black pixels and pure white ones; what would normally be called a black-and-white image, that is, an image containing shades of gray, is referred to in this context as grayscale. [2]

  8. File:Gas Cylinder.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Gas_Cylinder.jpg

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  9. Panchromatic film - Wikipedia

    en.wikipedia.org/wiki/Panchromatic_film

    The first black-and-white feature film photographed entirely on panchromatic stock was The Headless Horseman (1922). [6] But early panchromatic stock was more expensive, had a relatively short shelf-life, and was more difficult for laboratories to process because it required working in total darkness.