The Orkney Image Library
No: 5269 Contributor: Kirkwallian Year: 2006
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The remains of what was a double rainbow. Any one know what causes the double image
Picture added on 13 October 2007
Secondary rainbows are caused by a double reflection of sunlight inside the raindrops, and appear at an angle of 50°–53°
Added by Das on 14 October 2007
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