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Aiboud
Which of these colors is not part of the primary colors? green .yellow.bleu.gray
Feb 2, 2011 9:25 AM
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Answers · 9
There are two sets of primary colours: 1. Materials: magenta, cyan, yellow 2. Light: red, blue, green So, your question cannot be answered.
February 2, 2011
In art, the 3 primary colours are Red, Blue and Yellow since they can combine to form all the other colours, except white. In science, with respect to light, Red, Blue and Green are the 'primary' colours as they form the White colour when combined.
February 2, 2011
R.G.B.
February 2, 2011
Green
February 3, 2011
Gray is not. Sir Isaac Newton was the first to discover that all shades of white are a mixture of fundamental colours, the now called spectral colours. This is not related to the choice of colours for printing or photographs, several choices could do the job, the RGB (by addition) or the one used by a subtractive process may have several equivalent choices, although not practical, so any colour could be a primary colour in this case. A pure colour, or a spectral colour, that is how I intend your question, deals with the frequency (spectrogram with only one spike) of the light that gives us that perception. For any shade of gray you will need at least two colours, that is at least two spikes in the frequency spectrum, so it is not a pure colour.
February 3, 2011
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Aiboud
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