White Paint White Light Standard Whites Computers

In painting, white can be created by reflecting ambient light from a white pigment. White when mixed with black produces gray.

2 White light

Until Newton's work became accepted, most scientistsFor the scientific journal named Science see Science (journal). Science is both a process of gaining knowledge, and the organized body of knowledge gained by this process. The scientific process is the systematic acquisition of new knowledge about a syste believed that white was the fundamental color of light; and that other colors were formed only by adding something to light. Newton demonstrated that white was formed by combining the other colors.

In the science of lighting, there is a continuum of colors of light that can be called "white". One set of colors that deserve this description are the colors emitted, via the process called incandescence, by a black bodyIn physics a black body is an object that absorbs all light that falls onto it: no light passes through it nor is reflected. Despite the name, black bodies do radiate light. The term "black body" was introduced by Gustav Kirchhoff in 1862. The light emitt at various relatively-high temperatures. For example, the color of a black body at a temperature of 2848 kelvinsThe kelvin (symbol: K is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvin is absolute zero (when molecular motion stops), and one kelvin is the fraction 1/273. 16 of the thermodynamic temperature o matches that produced by domestic incandescent light bulbs. It is said that "the color temperatureWhite light is commonly described by its color temperature . A light source's color temperature is calculated by comparing it to the color of light a black-body radiator gives off when heated. Daylight has a color temperature of about 5500 K. Heating an i of such a light bulb is 2848 K". The white light used in theatre illumination has a color temperature of about 3200 K. Daylight has a nominal color temperature of 5400 K (called equal energy white), but can vary from a cool red up to a bluish 25,000 K. Not all black bodyIn physics a black body is an object that absorbs all light that falls onto it: no light passes through it nor is reflected. Despite the name, black bodies do radiate light. The term "black body" was introduced by Gustav Kirchhoff in 1862. The light emitt radiationRadiation generally means the transmission of objects or information from a source into a surrounding medium or destination. Within physics, related concepts are: Ionizing radiation is a stream of particles (photons or other particles) with sufficient ene can be considered white light: the background radiation of the universeAlternate uses: See Universe (disambiguation In the first half of the 20th century, the word universe was used to mean the whole spacetime continuum in which we exist, together with all the energy and matter within it. Attempts to understand the universe, to name an extreme example, is only a few kelvins and is quite invisible.

3 Standard whites

Standard whites are often defined with reference to the International Commission on Illumination's (CIE's) chromaticity diagram. These are the D series of standard illuminants. Illuminant D₆₅, originally corresponding to a color temperature of 6,500 K, is taken to represent standard daylight.

4 Computers

Computer displays often have a color temperature control, allowing the user to select the color temperature (usually from a small set of fixed values) of the light emitted when the computer produces the electrical signal corresponding to "white". The RGB coordinates of white are 255 255 255.

5 Usage, symbolism, colloquial expressions

The term white is often used in the West to denote " race" for so-called Caucasian people, i.e. people of European/West Asian descent with light skin color, whose skin color actually ranges from pink to pale brown, and overlaps with some people that might be classified as " black". For more details, see Whites.

White noise, in acoustics, is a sibilant sound that is often a nuisance, although it can also be deliberately created for test purposes.

Whitewash, figuratively, means an attempt to obscure the truth by issuing a blanket of lies. See propaganda.

Whiteout is a weather condition in which visibility is reduced and surface definition lost in snowy environments.

In Chinese and Indian tradition, white is the color of mourning, death, and ghosts.

White is the traditional color of bridal dress in both western (European) and Japanese weddings.

White is often associated with Conservatism (as opposed to Communism), particularly in the years following World War I, with civil wars fought between "Reds" and "Whites", for instance the Civil War in Russia and the Civil War in Finland.

A white flag is an international sign of either surrender, or truce, that is, it is a sign of peaceful intent, typically at time of war.

The white ribbon is worn by movements denouncing violence against women. It is also worn by some feminists and was a symbol for peace in Quebec, in the beginning of 2003, as part of the popular opposition to war on Iraq.

To "show the white feather" is to display cowardice. In cockfighting, a white feather in the tail is considered a mark of inferior breeding. In Victorian England a purported coward would be presented with a white feather.

White is also one of the two opponents in many board games of abstract strategy, such as go, chess, and checkers.

6 White in heraldry

Arthur Charles Fox-Davies has argued that white can be considered a tincture in heraldry separate from its use to represent argent, and in fact the labels borne on the arms, crests and supporters of members of the British Royal Family other than the reigning sovereign are invariably shown as white.

7 Color coordinates

RGB:
- R: 255
- G: 255
- B: 255
CMYK:
- C: 0
- M: 0
- Y: 0
- K: 0
HSV:
- H: 0
- S: 0
- V: 100

hex triplet:#FFFFFF

8 See also

List of colors

Colors

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1 Paint