Crepuscular Rays is Atmospheric Optics of Sunlight appear to Radiate From the Point in the Sky Where Sun is Located. Tauheed Ahmad June 24, 2016 Nature 982 Crepuscular rays are also called as “Sun rays” in atmospheric optics, are actually rays of sunlight that appear to radiate from the point in the sky where the sun is located. These rays, which stream through gaps in clouds mainly stratocumulus or between other objects, are columns of sunlit air separated by darker cloud-shadowed regions. In spite of seeming to converge at a point, the rays are actually fact near-parallel shafts of sunlight, and their apparent convergence is a perspective effect alike, i.e., to the way that parallel railway lines seem to converge at a point in the distance. The name comes from their frequent occurrences during twilight hours those around dawn and dusk, when the contrasts in the middle of light and dark are the most obvious. The name “Crepuscular” comes from the Latin word “Crepusculum”, which means twilight. The rays in some cases may spread across the sky and appear to converge at the antisolar point, the point on the sky sphere directly opposite the sun. In this case they’re called anticrepuscular rays. These are not as easily spotted as crepuscular rays. This apparent dual convergence to both the solar and antisolar points is a perspective effect analogous to railway tracks appearing to converge to opposite points in opposite directions. Crepuscular rays are frequently red or yellow in appearance since the path through the atmosphere at sunrise and sunset passes through up to 40 times as much air as rays from a high midday sun. However; particles in the air scatter short wavelength light blue and green through Rayleigh scattering much more strongly than longer wavelength yellow and red light. Lunar crepuscular rays Jacob’s Ladder crepuscular panorama Crepuscular Rays observed due to scattering of light by dust partcles early in the morning. Crepuscular rays in steam from hot springs at Yellowstone National Park Crepuscular rays in Golden Gate Park Crepuscular rays at the Dago Waterfall near Bandung, 1920s or 1930s Crepuscular rays at sunset near Waterberg Plateau (Wabi Game Ranch) in Namibi Crepuscular rays at Hakodate Bay, Japan Crepuscular rays at Black Mountain Tower, Canberra Behind the cloud style crepuscular rays Anticrepuscular rays opposite the setting sun off the Florida Gulf Coast of the United States Wide crepuscular rays over Santa Clarita, CA western Oklahoma and shows crepuscular rays caused by the Rocky Mountains, 250 km (160 mi) away This astronaut photograph from the ISS provides an unusual viewing perspective from above some crepuscular rays and a clear illustration of their parallel nature Source: Wikipedia Originally posted 2014-12-24 21:17:39. Republished by Blog Post Promoter Related PostsTianzi Mountains, Which Formation Inspired the Fictional World of PandoraThe Catastrophic Disaster of Lake NyonEvergreen Plants That Glow In the DarkMagnificent Beauty of Radiant Winter Mornings in BelarusMidnight Sun A Natural Phenomenon of IcelandLively Pictures of Ocean during Powerful Storms The Land of Strays in Costs RicaMysterious “Pyramid” spotted on Ceres Leave a Reply Cancel ReplyYou must be logged in to post a comment.