Light pillar
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(Redirected from Sun pillar)
A light pillar is a visual phenomenon created by the reflection of light from ice crystals with near horizontal parallel planar surfaces. The light can come from the sun (usually at or low to the horizon) in which case the phenomenon is called a sun pillar or solar pillar. It can also come from the moon or from terrestrial sources such as streetlights.[1]
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[edit] Images
 Pillars from uncovered work lights above University of Alaska Fairbanks (J. Hall) |
 Sunset with prominent sun pillar near Tucson, Arizona |
 Sun pillar in San Francisco, California. |
[edit] See also
[edit] References
- ^ "Nature's spotlights". San Francisco Chronicle. 2009-01-29. http://www.sfgate.com/cgi-bin/object/dayinpictures?f=/g/a/2009/01/28/dip.DTL&o=12&type=dayinpictures.
[edit] External links
- Pillars. Atmospheric Optics. Explanations (10 pages) and many images.
- Light Pillars: An Introduction to Sun Pillars and Related Phenomena. The Weather Doctor's Weather Eyes. Another nice explanation, all on one page
- Fabulous frozen frames - Sydney Morning Herald. November 1, 2006
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Wikimedia Commons has media related to: Sun pillar |
- A Sun Pillar Over North Carolina. NASA Astronomy Picture of the Day, 2008 December 15
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