A Pileus Iridescent Cloud Over Ethiopia

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zorg.ch #113327 by [z]Barbara Harris @ 25.08.2011 00:00 - nach oben - A Pileus Iridescent Cloud Over Ethiopia Explanation: Yes, but how many dark clouds have a multicolored lining? Pictured, behind this darker cloud, is a pileus iridescent cloud, a group of water droplets that have a uniformly similar size and so together diffract different colors of sunlight by different amounts. The above image was taken just after the picturesque sight was noticed by chance by a photographer in Ethiopia. A more detailed picture of the same cloud shows not only many colors, but unusual dark and wavy bands whose origins are thought related to wave disturbances in the cloud. Retrospective: Past APODs featuring iridescent clouds. Credit & Copyright