Which scientist first demonstrated that white light is composed of a spectrum of colors using a glass prism?
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Isaac Newton's experiments in the 1660s showed that a prism could split white light into a colorful spectrum and then recombine them. Surprisingly, he originally identified only five colors, later adding orange and indigo to match the number of notes in a musical scale. Photo: Godfrey Kneller, Wikimedia Commons, Public domain.
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Source: Wikipedia (CC BY-SA)
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