Letter | Published:

Bishop's Ring.—The Sky-coloured Clouds

Nature volume 36, page 365 | Download Citation

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Abstract

DURING a recent visit to the Alps I carefully looked for Bishop's ring, and found that it was generally visible at high altitudes in the middle of the day when the sky was clear. On the whole, the higher one ascended, the plainer it was, up to a height of 9000 feet, beyond which I did not go. On one occasion it was visible nearly or quite as low down as Chamounix, altitude 3400 feet; but this was the lowest point I saw it from. It was always extremely faint, so much so that if I had not seen it previously in its greater brightness I should not have noticed it at all,—indeed, it could usually only be detected by a careful comparison of the colour of different parts of the sky. Its dimension seems the same as heretofore.

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  1. Sunderland, July 30.

    • T. W. BACKHOUSE

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DOI

https://doi.org/10.1038/036365a0

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