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  2. United States Army branch insignia - Wikipedia

    en.wikipedia.org/wiki/United_States_Army_branch...

    The first use of Army branch insignia was just prior to the American Civil War in 1859 for use on the black felt hat. A system of branch colors, indicated by piping on uniforms of foot soldiers and lace for mounted troops, was first authorized in the 1851 uniform regulations, with Prussian blue denoting infantry, scarlet for artillery, orange for dragoons, green for mounted rifles, and black ...

  3. List of butterflies of India (Papilionidae) - Wikipedia

    en.wikipedia.org/wiki/List_of_butterflies_of...

    Black-coloured red-bodied swallowtails with elongated wings, prominent white and red spots, and tails that are found in low elevation forests along the Himalayas and the Northeast of India. Common windmill, Byasa polyeuctes (Doubleday, 1842) Rose windmill, Byasa latreillei (Donovan, 1826) Neville's windmill, Byasa nevilli (Wood-Mason, 1882)

  4. CMYK color model - Wikipedia

    en.wikipedia.org/wiki/CMYK_color_model

    The CMYK color model is based on the CMY color model, which omits the black ink. However, the imperfect black generated by mixing commercially practical cyan, magenta, and yellow inks is unsatisfactory, so four-color printing uses black ink in addition to the subtractive primaries. Common reasons for using black ink include: [2]

  5. Butterfly - Wikipedia

    en.wikipedia.org/wiki/Butterfly

    The butterfly was sometimes depicted with the maw of a jaguar, and some species were considered to be the reincarnations of the souls of dead warriors. The close association of butterflies with fire and warfare persisted into the Aztec civilisation; evidence of similar jaguar-butterfly images has been found among the Zapotec and Maya civilisations.

  6. List of 16-bit computer color palettes - Wikipedia

    en.wikipedia.org/wiki/List_of_16-bit_computer...

    The Atari ST series has a digital-to-analog converter of 3-bits, eight levels per RGB channel, featuring a 9-bit RGB palette (512 colors).Depending on the (proprietary) monitor type attached, it displays one of the 320×200, 16-colors and 640×200, 4-colors modes with the color monitor, or the high resolution 640×400 black and white mode with the monochrome monitor.

  7. Digital imaging - Wikipedia

    en.wikipedia.org/wiki/Digital_imaging

    Image sharpens & reinstatement is the procedure of images which is capture by the contemporary camera making them an improved picture or manipulating the pictures in the way to get chosen product. This comprises the zooming process, the blurring process, the sharpening process, the gray scale to color translation process, the picture recovery ...

  8. Tint, shade and tone - Wikipedia

    en.wikipedia.org/wiki/Tint,_shade_and_tone

    In color theory, a tint is a mixture of a color with white, which increases lightness, while a shade is a mixture with black, which increases darkness. Both processes affect the resulting color mixture's relative saturation. A tone is produced either by mixing a color with gray, or by both tinting and shading. [1]

  9. Monochrome - Wikipedia

    en.wikipedia.org/wiki/Monochrome

    it may mean having only one color which is either on or off (also known as a binary image), allowing shades of that color. A monochrome computer display is able to display only a single color, often green, amber, red or white, and often also shades of that color. In film photography, monochrome is typically the use of black-and-white film.