Today's Archive Search Links About
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Today's Archive Search Links About |
| This photo illustrates that while most of us observe crepuscular, or twilight, rays late in the day or early in the morning; they can be seen any time of day if clouds are positioned in such a way to block a portion of sunlight. In addition, we more often view rays when they're "coming up" from the Sun rather than when they're "coming down." The above photo was snapped near Merida, Spain on April 6, 2008, 2 hours and 15 minutes after the Sun had risen. As is the case here, frequently the cloud casting the shadow is above the horizon. The sunlit regions are parts of the atmosphere that usually contain dust or other aerosols, while the dark lanes are in the shadows of clouds. |
| Related Links: | ||
| Gema's Home Page | Atmospheric Optics | Color and Light in Nature |
| Atmospheric Phenomena | More About Crepuscular Rays | Sky Photography |
Summary authors & editors:
Gema Araujo
Jim Foster
Coming soon...
San Francisco High-Rise Rays