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Quotation from Opticks by Isaac Newton

“the whiteness of the Sun's Light is compounded of all the primary Colours mix'd in a due Proportion.”

Isaac Newton

Opticks, Book I, Part II, Prop. V, Theor. IV (Project Gutenberg text of the 4th edition (London, 1730))

Portrait of Isaac Newton

The central result of the theory of colours: white is not simple but a mixture.

Citation: "the whiteness of the Sun's Light is compounded of all the primary Colours mix'd in a due Proportion." — Isaac Newton, Opticks, Book I, Part II, Prop. V, Theor. IV (Project Gutenberg text of the 4th edition (London, 1730)). (id newton-opticks-q3)

Portrait: GodfreyKneller-IsaacNewton-1689, Godfrey Kneller, Public domain.

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Quote card: the whiteness of the Sun's Light is compounded of all the primary Colours mix'd