Abstract
THE remarkable cloud-glow after sunset on November 9 was seen by me at Sudbury on the southern border of Suffolk. I was struck by the softness and uniformity as well as brightness of the glow, and by its contrast with the pale greenish hue of the clear sky around, from which it was separated by a frame of nearer clouds in shade. When I first noticed it the (upper) margin was about 15° above the horizon (estimated from memory). Presently the glow diminished in brightness and increased in extent upward to about 40° above the horizon; and at the highest (nearest) part the delicate structure of the cirrus was visible.
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AIRY, H. Optical Phenomena. Nature 29, 103 (1883). https://doi.org/10.1038/029103a0
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DOI: https://doi.org/10.1038/029103a0
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