Uploaded on Jul 31, 2011
July 2011
First of all - 'Crepuscular Rays':
Crepuscular rays (also known as God Rays), in atmospheric optics, are rays of sunlight that appear to radiate from a single point in the sky. These rays, which stream through gaps in clouds or between other objects, are columns of sunlit air separated by darker cloud-shadowed regions. The name comes from their frequent occurrences during crepuscular hours (those around dawn and dusk), when the contrasts between light and dark are the most obvious.
Crepuscular rays are near-parallel, but appear to diverge because of linear perspective. They often occur when objects such as mountain peaks or clouds partially shadow the sun's rays like a cloud cover. Various airborne compounds scatter the sunlight and make these rays visible, due to diffraction, reflection, and scattering.
'Anticrepuscular rays':
Crepuscular and anticrepuscular rays are generated in the same way. The rays in some cases may extend across the sky and appear to converge at the antisolar point, which is the point on the sky sphere directly opposite the sun, and they are called anticrepuscular rays. Like crepuscular rays, they are parallel shafts of sunlight from holes in the clouds, and their apparent convergence is a perspective effect. They are not as easily spotted as crepuscular rays.
http://en.wikipedia.org/wiki/Crepuscu...
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Interesting, I learned me something with this one! So that is what they are called and something in our earth's atmosphere has changed recently to cause this strange and usually RARE phenomenon to occur in various places throughout the U.S. and other parts of the world (according to witnesss accounts). Meowza
First of all - 'Crepuscular Rays':
Crepuscular rays (also known as God Rays), in atmospheric optics, are rays of sunlight that appear to radiate from a single point in the sky. These rays, which stream through gaps in clouds or between other objects, are columns of sunlit air separated by darker cloud-shadowed regions. The name comes from their frequent occurrences during crepuscular hours (those around dawn and dusk), when the contrasts between light and dark are the most obvious.
Crepuscular rays are near-parallel, but appear to diverge because of linear perspective. They often occur when objects such as mountain peaks or clouds partially shadow the sun's rays like a cloud cover. Various airborne compounds scatter the sunlight and make these rays visible, due to diffraction, reflection, and scattering.
'Anticrepuscular rays':
Crepuscular and anticrepuscular rays are generated in the same way. The rays in some cases may extend across the sky and appear to converge at the antisolar point, which is the point on the sky sphere directly opposite the sun, and they are called anticrepuscular rays. Like crepuscular rays, they are parallel shafts of sunlight from holes in the clouds, and their apparent convergence is a perspective effect. They are not as easily spotted as crepuscular rays.
http://en.wikipedia.org/wiki/Crepuscu...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Interesting, I learned me something with this one! So that is what they are called and something in our earth's atmosphere has changed recently to cause this strange and usually RARE phenomenon to occur in various places throughout the U.S. and other parts of the world (according to witnesss accounts). Meowza
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