“Colour as perceived by us is a function of three independent variables”

— James Clerk Maxwell

Maxwell, in a letter to William Thomson, The Scientific Letters and Papers of James Clerk Maxwell: 1846-1862 (1990), p. 245.
Context: Colour as perceived by us is a function of three independent variables at least three are I think sufficient, but time will show if I thrive.

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James Clerk Maxwell27

Scottish physicist 1831–1879

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“Colour as perceived by us is a function of three independent variables”

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James Clerk Maxwell27

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