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What are and how are sundogs caused?

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J Puddz

on 11 May 2010

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Transcript of What are and how are sundogs caused?

Sundogs are bright spots on either or both sides of the sun. Sundogs are images of the sun formed as a result of light bending through tiny, floating ice crystals in the air or high clouds. The ice crystals are shaped like plates falling in such a way that the flat surfaces face parallel to the Earth. How are they caused? Sunlight enters at one side, bends and it bends again as it exits. The light refraction creates an image of the sun 22° to the left and/or right of the sun. The most brilliant sundogs occur on a cold sunny morning or evening, when the sun is near the horizon and the air is loaded with ice crystals. What are Sundogs? Sundogs are a rare phenomenon; they can be viewed approximately 10 times a year.
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