Abstract
YOUR correspondent Mr. W. E. Hart may be interested to know that magnificent rainbows, which appear to be within easy reach, may often be observed inside water-cooling towers, the necessary conditions being a fairly heavy, shower of the cooled water and an opening at one side of the tower sufficiently high to let the sunlight stream in over the observer's head.
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H., B. Miniature Rainbows. Nature 87, 348 (1911). https://doi.org/10.1038/087348c0
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DOI: https://doi.org/10.1038/087348c0
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