Isaac Newton (1642-1727), English mathematician, physicist and astronomer, decomposing light with a glass prism. Engraving by Froment after Guillon (19-th century). © Roger-Viollet
Isaac Newton (1642-1727), English mathematician, physicist and astronomer, decomposing light with a glass prism. Engraving by Froment after Guillon (19-th century). © Roger-Viollet

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