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OpenStudy (anonymous):
When can we have *Elliptic* rainbows ? Rainbows that are ellipses ?
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OpenStudy (anonymous):
Rainbows are circles. One only sees part of the circle because the horizon gets in the way. If one gets up high enough - such as in a plane - one can see the whole circle. Google and you will find plenty of images I am sure. BTW a circle can be seen as just a special form of ellipse. ie The maths for an ellipse includes the maths for a circle but not the other way around. ;-)
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