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Sandal Castle is a ruined medieval castle in Sandal Magna. | by belkin59
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Sandal Castle is a ruined medieval castle in Sandal Magna.

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 multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.

 

Rainbows can be observed whenever there are water drops in the air and sunlight shining from behind at a low altitude angle. The most spectacular rainbow displays happen when half the sky is still dark with raining clouds and the observer is at a spot with clear sky in the direction of the sun. The result is a luminous rainbow that contrasts with the darkened background -- The rainbow has a place in legend owing to its beauty and the historical difficulty in explaining the phenomenon.

 

In Greek mythology, the rainbow was considered to be a path made by a messenger (Iris) between Earth and Heaven. In Chinese mythology, the rainbow was a slit in the sky sealed by goddess Nüwa using stones of five different colours.

Courtesy Wikipedia -- Canon EOS 50E - 50mm Lens - Fuji Provia 100 iso Film

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Uploaded on April 27, 2011