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Diffuse sky radiation

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  • Diffuse sky radiation — A spectrum taken of blue sky clearly showing solar Fraunhofer lines and atmospheric water absorption band. Diffuse sky radiation is solar radiation reaching the Earth s surface after having been scattered from the direct solar beam by molecules… …   Wikipedia

  • Sky brightness — This article is primarily about the brightness of the night sky. For daytime situations, please see Diffuse sky radiation and Rayleigh Scattering. The fact that the sky isn t absolutely dark at night can easily be observed. Were the sky (in the… …   Wikipedia

  • Sky — The sky is the part of the atmosphere or of outer space visible from the surface of any astronomical object. It is difficult to define precisely for several reasons. During daylight, the sky of Earth has the appearance of a deep blue surface… …   Wikipedia

  • Diffuse Infrared Background Experiment — DIRBE instrument lightpath Diffuse Infrared Background Experiment (DIRBE)[1] was an experiment on NASA s COBE mission,[1] to survey the diffuse infrared s …   Wikipedia

  • Diffuse radiation —   Solar radiation, scattered by water vapor, dust and other particles as it passes through the atmosphere, so that it appears to come from the entire sky. Diffuse radiation is higher on hazy or overcast days than on clear days.   California… …   Energy terms

  • Blue Sky — Diffuse sky radiation causes the sky to appear blue.Blue Sky may refer to: * Blue Sky research, Research and development without obvious application. * BlueSky Charter School, an online school for Minnesota citizens. * Blue Sky (film), a 1994… …   Wikipedia

  • Hemispherical photography — Hemispherical photography, also known as fisheye or canopy photography, is a technique to estimate solar radiation and characterize plant canopy geometry using photographs taken looking upward through an extreme wide angle lens (Rich 1990).… …   Wikipedia

  • Sunlight — This article is about light emitted by the Sun. For other uses, see Sunlight (disambiguation). Sunshine redirects here. For other uses, see Sunshine (disambiguation). For natural lighting of interior spaces by admitting sunlight, see Daylighting …   Wikipedia

  • Rayleigh scattering — This article is about the optical phenomenon. For the magnetic phenomenon, see Rayleigh law. For the stochastic distribution, see Rayleigh distribution. For the wireless multipath propagation model, see Rayleigh fading. Rayleigh scattering causes …   Wikipedia

  • Sunglasses — For the Divine Brown song, see Sunglasses (song). Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against stray light from the sides. Sunglasses or sun glasses are a form of… …   Wikipedia

  • Sunset — Sunset, also called sundown in some American English dialects, is the instant when the trailing edge of the sun s disk disappears below the horizon in the west. It should not be confused with dusk, which is the point at which darkness falls, some …   Wikipedia