Really?I thought it was to do with the angle of the sun
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Barbarossa is not my real name,
Wed 13 May 2009, 15:55,
archived)
well - apparentlythe initial rainbow is partially refracted light, so the rest of the light goes somewhere else and it makes a second rainbow ... but it's not always strong enough to see...
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Prof UnderCover evitable,
Wed 13 May 2009, 15:58,
archived)