Tuesday, January 31, 2012

Anti-crepuscular rays

Polecat Bench. January, 2012

The term for rays cast by the setting sun is crepuscular--associated with twilight. They are caused by light passing through holes in the clouds, and they are actually parallel. It's a trick of perspective which makes it appear they originate from a single point. This photo was taken at sunset; it faces mainly to the east. Since the rays appear to be opposite the setting sun, they are called anti-crepuscular rays.

1 comment:

Anonymous said...

love your photos everytime i get nostalgic for Powell and Wyoming i look at your photos and it brings me right back home again Thanks