White

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White is an acromatic color, of maximum clarity and null darkness. Perceptually it is the consequence of the photoreception of an intense light formed by all wavelengths of the visible spectrum, by three wavelengths (long, medium and short) or by two complementary wavelengths. It resembles the color of snow, although other substances of maximum reflectance, such as magnesia, plaster and baritine (barium sulphate), are more specific examples of target. The name "white" includes the colours similar to the standard white, called whitish or whitish, which have a slight suggestion of saturation and nuance.

Etimology

The word "white" comes from the Latin vulgar blancus, 'white'; which is derived from the Germanic * blink, 'brilliant'; and this from the protogermic * blangkaz, 'shine, dazzle'. The extended form of the protoindo-European root * bhel-, 'shine, flare, burn'.

In Spanish, the term "white" begins to be used by 1140.

Lexems and synonymia

The leucus lexema, of the Greek λευκός (leucos), 'white' (and this of the Indo-European root * lewk-, 'light, shine'), associates to the terms that include it with the white color. One example of this is the word white blood.

A synonym of poetic use for white is albo, from Latin albus, 'white'. The same origin has the lexems alba and albo, which are found, for example, in the words albino and awe. Another synonym is candid, from Latin candņdus, 'white, pure', 'honest,'.

Properties

In the subtractive chromosynthesis

In the color subtractive synthesis system, where the colors are created by mixing pigments or dyes (paints, dyes, dyes), the most common primary color triad is cian, magenta and yellow. In this system, white cannot be obtained by mixing; to represent it, white pigment is used or the support on which it is worked (paper, fabric, etc.) is used to be colourless if it is white.

In the additive chromosynthesis

In the additive color synthesis system, in which the colors are obtained by mixing color light instead of pigments, the primary colors are red, green and blue. This means that when working with color light, it is enough to mix those three colors in different proportions to get all the others. To create the target, the three primary colors are mixed at their maximum intensity.

This light-colored additive system is the one that monitors and televisions use to produce colors. In this system, a color is described with numerical values for each of its components (red, green and blue), indicating red with "R," green with "G" and blue with "B." On a value scale of 0 to 255, the pure additive white is expressed as R = 255 (red at maximum value), G = 255 (green at maximum value) and B = 255 (blue at maximum value). See RGB.

White pigments

From the most remote antiquity