The Mystifying ‘Light Pillars’


On a clear and cold night, beams of light appeared to be coming from the ground 

and shooting skyward.

 

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A light pillar is a visual phenomenon created by   

the reflection of light from ice crystals with near horizontal parallel planar 

surfaces.

 

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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.

 

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