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Color Wavelength Frequency Photon energy violet. 380–450 ... Spectral colors simple table|colour=y}}
Newton's color circle, from Opticks of 1704, showing the colors he associated with musical notes. The spectral colors from red to violet are divided by the notes of the musical scale, starting at D. The circle completes a full octave, from D to D. Newton's circle places red, at one end of the spectrum, next to violet, at the other.
A rainbow is a decomposition of white light into all of the spectral colors. Laser beams are monochromatic light, thereby exhibiting spectral colors. A spectral color is a color that is evoked by monochromatic light, i.e. either a spectral line with a single wavelength or frequency of light in the visible spectrum, or a relatively narrow spectral band (e.g. lasers).
The visible spectrum perceived from 390 to 710 nm wavelength. Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity.When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light".
A color wheel or color circle [1] is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms color wheel and color circle interchangeably; [ 2 ] [ 3 ] however, one term or the other may be more prevalent in ...
The irises of human eyes exhibit a wide spectrum of colours. Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye's iris [1] [2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.
Optionally set(s) of color coordinates, referring to a specific color. [ note 1 ] Each color coordinate gives the specific color in one color space (e.g. RGB), and one standard (e.g. sRGB). [ note 2 ] The following color spaces can be found in a color infobox: Hex triplet : RGB values as a 24-bit hexadecimal value.
If no color is given, a white light is generally implied. The cycle period, e.g. "10s" for ten seconds. Additional parameters are sometimes added: The height of the light above the chart datum for height (usually based on high water). e.g. 15m for 15 metres. The range in which the light is visible, e.g. "10M" for 10 nautical miles.