Crepuscular Rays, August 10, 2011. Crepuscular rays are an atmospheric optical effect that appear as bright rays of light that break through clouds, and spread out across the landscape. The beams of light are more or less parallel, but seem to radiate outward from the Sun because of perspective. Crepuscular rays are most often seen in the morning and evening when the contrast between the bright rays and dark sky is most pronounced. Indeed, the word crepuscular is derived from the Latin word for twilight.
This photograph was taken near my home, one evening while I was out for a walk.
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