Sun Pillar - Weather Phenomenon - Postcard Uncirculated 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. 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. Owing to such optical phenomenon the sky sometimes seems like a natural kaleidoscope. Though light pillars seem like weather illusion , they are natural phenomena. The light pillar looks like thin columns that that are sometimes extend vertically below or above the source of light. The Light Pillars are prominently visible when the sun is low or lies below the horizon. Normally these Light Pillars form arcs that extend from five to ten degrees just beyond the solar disc. Sometimes similar reflection of moonlight by varied forms of ice crystals may also take place thus resulting in the form of light pillars. Light Pillars are particularly formed due to the reflection of column or flat shaped ice crystals that are present in the ice or cirrus clouds, hence the name light pillars. Postcard, Uncirculated approximate size is 4.75" X 6.25" From a large postcard collection that has been stored in photo albums. Older cards may show some slight yellowing from age. All cards are scanned, any spots, stripes or color's on black and white or colored postcards are scanner induced and not actual. All of my postcards ship in cardboard mailers which are pricey to use, but insure that your card is well protected during shipping. Each additional postcard will be shipped for .50 cents more in the same transaction. |
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