Newton's experiment shows how beam of white light

Newton's experiment shows how beam of white light is refracted by prism and broken into colours of spectrum (right). Dotted line shows beam of light entering through window and path it would take if not refracted. Woodcut from Voltaire Melanges de Philosophie: Elemens due Philosophie de Newton, etc. Paris 1757

1757 Beam Dotted Entering Optics Philosophie Prism Refracted Spectrum Voltaire

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