Concept explainers
Is it possible that total internal reflection plays a role in rainbows? Explain in terms of indices of refraction and angles, perhaps referring to Figure 25.48. Some of us have seen the formation of a double rainbow. Is it physically possible to observe a triple rainbow?
Figure 25.48 Double rainbows are not a very common observance. (credit: InvictusOU812, Flickr)
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