Abstract
ON August 9, at 0900 G.M.T., numerous aeroplane vapour trails had spread out into wide belts of apparently cirrus cloud. Two mock suns were then visible, one at about 22° from the sun and one nearly opposite to it and at about the same height above the horizon as the sun. These mock suns disappeared after a few minutes.
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SANSOM, G. A Solar Halo Phenomenon. Nature 154, 433 (1944). https://doi.org/10.1038/154433b0
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DOI: https://doi.org/10.1038/154433b0
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