I heard or read about this only within the last 12 months too cuppa and next time I saw a double rainbow I took notice of the colour order and yes they are reversed. From what I remember it's something to do with a re-refraction, or reflection of the main rainbow. Apparently there's only one rainbow but in some circumstances the angle of the light re-refracts that rainbow through the rain, hence it's colour order is reversed. It's a reflection of a refraction so I'd say that's two rainbows but apparently it's one plus a reflection of that one meaning it's only one. Hey, imagine how good it would be if this was the biggest dispute getting around! It's interesting though. Maybe a question for Dr Karl!Originally Posted by Cuppa
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