Example sentences from the Web for colour index

From each catalogue of visual magnitudes of the stars we may obtain their photographic magnitude through adding the colour-index.
Lectures on Stellar Statistics|Carl Vilhelm Ludvig Charlier
The difference between the photographic and the visual magnitudes is called the colour-index (c).
Lectures on Stellar Statistics|Carl Vilhelm Ludvig Charlier
Instead of s there may also be used another expression for the colour, called the colour-index.
Lectures on Stellar Statistics|Carl Vilhelm Ludvig Charlier

colour index

noun

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

geology the sum of the dark or coloured minerals of a rock, expressed as a percentage of the total minerals

chem physics a systematic arrangement of colours according to their hue, saturation, and brightness

Words nearby colour index

coloured, colourfast, colour filter, colourful, colour guard, colour index, colouring, colourist, colourize, colourless, colour line

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

单词	colour index
释义	Example sentences from the Web for colour index From each catalogue of visual magnitudes of the stars we may obtain their photographic magnitude through adding the colour-index. Lectures on Stellar Statistics\|Carl Vilhelm Ludvig Charlier The difference between the photographic and the visual magnitudes is called the colour-index (c). Lectures on Stellar Statistics\|Carl Vilhelm Ludvig Charlier Instead of s there may also be used another expression for the colour, called the colour-index. Lectures on Stellar Statistics\|Carl Vilhelm Ludvig Charlier colour index noun 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 geology the sum of the dark or coloured minerals of a rock, expressed as a percentage of the total minerals chem physics a systematic arrangement of colours according to their hue, saturation, and brightness Words nearby colour index coloured, colourfast, colour filter, colourful, colour guard, colour index, colouring, colourist, colourize, colourless, colour line Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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