Double rainbow, double fortune

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Double rainbow, double fortune

 A double rainbow is seen over downtown Sokcho, Gangwon, on Oct. 23. [YONHAP]

A double rainbow is seen over downtown Sokcho, Gangwon, on Oct. 23. [YONHAP]

 
A double rainbow is seen over downtown Sokcho, Gangwon, on Oct. 23. A double rainbow occurs when light refracts and reflects twice inside raindrops, creating a secondary arc outside the primary rainbow. 
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