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Colourants: dyes vs pigments

A colourant is a substance that is used to impart colour to matter. Dyes and pigments are the main forms of colourant. The main difference between them is that dyes…

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Palettes of the masters: JMW Turner

“Your business, Winsor, is to make colour. Mine is to use them.” This was JMW Turner’s response to gentle criticism from William Winsor, who was concerned about the artist’s occasional…

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