The Rainbow, is a treatise on physics?

Abstract

The Rainbow is a freak of nature. But the explanation of why it occurs is quite complex and not often found in elementary physics books. Typically, you see only a bow, but sometimes there are two, one more intense than the other. This article gives several explanations of why the Rainbow. A according to Aristotle, another supernumerary arcs according to Young, and the last by Airy, based on the knowledge to be had on the properties of waves at the time.