Environmental Graffiti

Light Pillars: Incredible Optical Phenomena

Colourful light pillars often appear in winter when snow or ice crystals reflect light from a strong source like the sun or moon. Aided by extreme cold, light pillars appear when light bounces off the surface of flat ice crystals floating relatively close to the ground. The pillars look like feathers of light that extend vertically above or below the light source, or both.

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