Abstract
WITH reference to my letter in NATURE of August 30 on the subject of “An Unusual Rainbow,” and to the replies which were given on September 6, I should like to mention that the sun's altitude and the angle at which the primary bow met the reflected bow were only rough estimations. At the time when the phenomenon was visible I had unfortunately no instruments at hand. Since then I have calculated the altitude of the sun from a knowledge of the ship's position and the sun's declination and hour angle, and have found it to be about 8°.5. This gives the angle of intersection of the bows as 24¼° approximately, which is more in agreement with my estimation. The surface of the sea was remarkably calm at the time, and this no doubt accounts for the brilliancy of the bows, which are due to the reflected image of the sun.
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LOW, A. Unusual Rainbows. Nature 100, 44–45 (1917). https://doi.org/10.1038/100044c0
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DOI: https://doi.org/10.1038/100044c0
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