facebook status - Strange Pillars of Light explained

A light pillar is a visual phenomenon created by the reflection of light from ice crystals with near horizontal parallel planar surfaces.

Light pillars are a kind of optical phenomenon which is formed by the reflection of sunlight or moonlight by ice crystals that are present in the Earth’s atmosphere.

Light pillars on a cold night in Jackson, WY.

 The light pillar looks like a thin column that extends vertically above and/or below the source of light. The light pillar is prominently visible when the Sun is low or lies below the horizon. It normally forms an arc that extends from five to ten degrees beyond the solar disc. Light pillars can sometimes also be seen arising from the Moon.

Light pillars are formed by reflection from ice crystals with roughly horizontal faces.

Photo: NatGeo/Flickr nebarnix

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source:http://art2shere.blogspot.com/2012/10/13578664483294.html