Sunset Wallpaper
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Sunset Wallpaper
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Wallpaper Detail
- Submited:2007-04-15 09:11:18
- File Size:78248
- Resolution:1280x960
- File Format:2
- Category:Sunset
- Downloads:1
- Views:10
- Number of rates:0
- Rating:0.0000
About Sunset
Sunset in Djerba - photo wallpapers; Megawallpapers.org: Sunset, also called sundown in some American English dialects, is the time at which the Sun disappears below the horizon in the west. It should not be confused with dusk, which is the (variously defined) point at which darkness falls, some time after the Sun itself sets (which begins twilight). The red hues of the sky at sunset and sunrise are caused by the Rayleigh scattering, of blue light, by statistical fluctuations in the density of Earth's atmosphere. This also causes the blue diffuse sky radiation. Relatively little red light is scattered in this way, and so the sky often takes on shades of red, orange and yellow. The color of a sunset may be enhanced by atmospheric phenomena such as clouds, smoke and smog produced by natural processes or human activity, and by ash from volcanic eruptions. A number of eruptions in recent times, such as those of Mount Pinatubo in 1991 and Krakatoa in 1883, have been sufficiently large to produce remarkable sunsets (and sunrises) all over the world. The sunset is often more brightly coloured than the sunrise, with the shades of red and orange being more vibrant. The atmosphere responds in a number of ways to exposure to the Sun during daylight hours. In particular, there tends to be more dust in the lower atmosphere at the end of the day than at the beginning. During the day, the Sun heats the surface of the Earth, lowering the relative humidity and increasing wind speed and turbulence, which serves to lift dust into the air. However, differences between sunrise and sunset may in some cases depend more on the geographical particulars of the location from which they are viewed. For example, on an west-facing coastline, sunset occurs over water while sunrise occurs over land. The timing of sunset varies with the time of year and the latitude of the location from which it is viewed (and, in local time, with the location's precise longitude). Changes in timing of sunset are d...
Sunset in Djerba - photo wallpapers; Megawallpapers.org: Sunset, also called sundown in some American English dialects, is the time at which the Sun disappears below the horizon in the west. It should not be confused with dusk, which is the (variously defined) point at which darkness falls, some time after the Sun itself sets (which begins twilight). The red hues of the sky at sunset and sunrise are caused by the Rayleigh scattering, of blue light, by statistical fluctuations in the density of Earth's atmosphere. This also causes the blue diffuse sky radiation. Relatively little red light is scattered in this way, and so the sky often takes on shades of red, orange and yellow. The color of a sunset may be enhanced by atmospheric phenomena such as clouds, smoke and smog produced by natural processes or human activity, and by ash from volcanic eruptions. A number of eruptions in recent times, such as those of Mount Pinatubo in 1991 and Krakatoa in 1883, have been sufficiently large to produce remarkable sunsets (and sunrises) all over the world. The sunset is often more brightly coloured than the sunrise, with the shades of red and orange being more vibrant. The atmosphere responds in a number of ways to exposure to the Sun during daylight hours. In particular, there tends to be more dust in the lower atmosphere at the end of the day than at the beginning. During the day, the Sun heats the surface of the Earth, lowering the relative humidity and increasing wind speed and turbulence, which serves to lift dust into the air. However, differences between sunrise and sunset may in some cases depend more on the geographical particulars of the location from which they are viewed. For example, on an west-facing coastline, sunset occurs over water while sunrise occurs over land. The timing of sunset varies with the time of year and the latitude of the location from which it is viewed (and, in local time, with the location's precise longitude). Changes in timing of sunset are d...
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