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Steve Murchie
Works at Envision Technology Partners
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Steve Murchie

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An Iridescent Cloud Over Colorado

Why would a cloud appear to be different colors? A relatively rare phenomenon known as iridescent clouds can show unusual colors vividly or a whole spectrum of colors simultaneously. These clouds are formed of small water droplets of nearly uniform size. When the Sun is in the right position and mostly hidden by thick clouds, these thinner clouds significantly diffract sunlight in a nearly coherent manner, with different colors being deflected by different amounts. Therefore, different colors will come to the observer from slightly different directions. Many clouds start with uniform regions that could show iridescence but quickly become too thick, too mixed, or too far from the Sun to exhibit striking colors. This iridescent cloud was photographed above Boulder, Colorado.

Image Credit & Copyright: August Allen
Explanation of the image from: http://apod.nasa.gov/apod/ap071125.html
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Steve Murchie

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Steve Murchie

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Shameless plug for a non-profit on whose board I serve. Girls Education International has been selected by the Safer World Fund (see http://www.globalgiving.org/leaderboards/safer-world) as part of a small group of Global Giving organizations to share in a $50K challenge match grant. Make a donation now, and double the difference you make.
This project supports secondary education for 30 girls in two remote villages in Pakistan. Funds provide transportation, two sets of uniforms per girl, books, and other school supplies.
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Have him in circles
73 people
Christopher Brown's profile photo
Brad Smith's profile photo
Gina Alexander's profile photo
Mary Ann Williamson's profile photo
Dave Drach's profile photo
Andrew Hyde's profile photo
Barry Eberly's profile photo
Judith Iglehart's profile photo
Kevin McGarvey's profile photo
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