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HeiligenscheinHeiligenschein ("holy light") is the name for an optical effect which creates a bright spot around the shadow of a person's head when this person is looking at it. It is created when the surface on which the shadow falls has special optical characteristics. Dewy grass is known to exhibit these characteristics, and create a Heiligenschein. On the moon, the opposition effect also creates a bright spot of light around the viewers head when he is looking in the opposite direction of the sun. External links
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