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A number of geometric arrangements of dots (or similar units) have been given special names in mathematics, art and symbolism. Subcategories This category has only the following subcategory.
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Ben Day dots are of equal size and distribution across a specific area, and are commonly applied to line art or graphic designs. To apply the dots, the artist would cut the appropriate shapes from transparent overlay sheets, which were available in a wide variety of dot size and distribution, to provide a range of tones to use.
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When displayed on a black-and-white monitor, the luminance signal produces a normal black-and-white image, while the chrominance signal manifests as a fine pattern of dots of varying size and intensity overlaid over the black-and-white picture. A related phenomenon is dot crawl, which can produce visual artifacts in colour pictures.