Parhelia (mock suns) combined with a halo and rainbow, 1721 (1845). Artist: Unknown

Parhelia (mock suns) combined with a halo and rainbow, 1721 (1845). Artist: Unknown

1-158-393 - Oxford Science Archive/Heritage Images

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Parhelia (mock suns) combined with a halo and rainbow, 1721 (1845). This phenomenon, caused by atmospheric refraction, was observed in England in 1721. From The Beauty of the Heavens by Charles F Blunt. (London, 1845).

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