Earth Science Photo Of The Day..!! 23/12/2011

PhotographerAlan Millar 
Summary AuthorAlan MillarJim Foster

The eye-catching fogbow shown above was observed while trying to get a glimpse of Mt. Everest when I visited theTibet Plateau in China. Fogbows, also known as cloudbows, are colorless (or nearly so) cousins of rainbows. It's the small fog droplets rather than falling raindrops that are responsible for the wan color and broader arch of a fogbow compared to the more showy rainbows. Actually, as long as the drop size is greater than about one millimeter in diameter, faint coloration is usually present. In spite of the long shadows noticeable in the picture, the photo was taken just after noon, on October 29, 2011.


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