colour index


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colour index

or

color index

n
1. (Astronomy) astronomy the difference between the apparent magnitude of a star measured in one standard waveband and in a longer standard waveband, indicating its colour and temperature
2. (Geological Science) geology the sum of the dark or coloured minerals of a rock, expressed as a percentage of the total minerals
3. (Chemistry) chem physics a systematic arrangement of colours according to their hue, saturation, and brightness
4. (General Physics) chem physics a systematic arrangement of colours according to their hue, saturation, and brightness
References in periodicals archive ?
This also agrees well with the V-Rc colour index values set out above, remembering that the F0 star provides ~80% of the system's luminosity.
MAHATMA GANDHI'S haemoglobin level, blood colour index and red blood cell count, as recorded 10 days before his assassination, will see the light of day when Los Angeles- based billionaire James Otis puts the blood report up for auction within a week.
Sun Chemical Performance Pigments offers a range of Colour Index types in a variety of physical forms, including conventional dry color, water based dispersions and standardized high solid press cakes.
ii) Evans and Franzmeier (1988) developed 2 overall colour indices to reflect soil wetness and aeration characteristics: Cc as a Colour index depending solely on soil chromas, Cch depending on soil chromas and hues.