Abstract
DURING the recent British American Himalayan Expedition, from an altitude of about 21,000 ft. on Nanda Devi in Garhwal, we saw at 3.30 p.m. on August 20 a particularly fine display of parhelia, or mock suns. The two lateral images and the lower one were especially bright, and were arranged as usual on a broad halo of light. The weather was cold at the time, unusually so even at that altitude for the monsoon period, 20° F. being recorded on the mountainside that same evening. We had on several previous occasions seen solar haloes, as we approached Nanda Devi via the Rishiganga gorge, but no certain appearance of mock suns, and the weather following the occurrence of these haloes had been fair and not particularly cold.
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ODELL, N. Mock Suns observed at Nanda Devi in Garhwal. Nature 138, 764 (1936). https://doi.org/10.1038/138764a0
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DOI: https://doi.org/10.1038/138764a0
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