Wednesday, 7 March 2012

[] If you enjoy rainbows, here are some beauties for you.....................


A rainbow is an optical and meteorological phenomenon that causes a spectrum of light to appear in the sky when the Sun shines on to droplets of moisture in the Earth's atmosphere. It takes the form of a multicolored arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun � which is 42 degrees from the direction opposite the Sun.
Rainbows can be caused by many forms of airborne water. These include not only rain, also mist, spray, and airborne dew. The rainbow is not located at a specific distance, but comes from any water droplets viewed from a certain angle relative to the Sun's rays.
In the case of primary rainbow which is the lowest and the brightest kind of rainbow with the colour red staying at the outer arc and violet at the inner section. You may have seen a double rainbow � which is a second arc forming above or outside of the primary rainbow. The formation of colours are opposite of that of the primary ones (red at inner arc while violet is located at the outer arc).
A rainbow spans a continuous spectrum of colours. For colours seen by a normal human eye, the most commonly cited and remembered sequence, in English, is Newton's sevenfold red, orange, yellow, green, blue, indigo and violet.
Rainbows appear in many visual artworks and often have symbolic significance. These beautiful and colourful works of nature are often present not only in paintings and other digital arts but oftentimes a subject in photography as well. Rainbows are popular subjects in photography because of its colourful nature which generally describes them as beautiful and peaceful arches in the sky.
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