rainbow
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As a storm recedes and the sun begins to shine, a rainbow appears in the sky. Rainbows are created when countless drops of water in the air, each acting as a tiny prism, split sunlight into the wavelengths of the visible spectrum.
Luminous arch in the sky displaying the colours of the spectrum formed by the refraction and reflection of the Sun's rays through rain or mist. Its cause was discovered by Theodoric of Freiburg in the 14th century.
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