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|Beverly T. Lynds|
|A tutorial on the physical nature of the rainbow, with graphics and text references. The traditional rainbow is sunlight spread out into its spectrum of colors and diverted to the eye of the observer by water droplets. The "bow" part of the word describes the fact that the rainbow is a group of nearly circular arcs of color all having a common center. Questions this site addresses: what is a rainbow? where is the sun when you see a rainbow? what makes the bow? what makes the colors in the rainbow? what makes a double rainbow? why is the sky brighter inside a rainbow? what are supernumerary arcs? what does a rainbow look like through dark glasses? what are reflection rainbows? Rainbows and proverbs; experiments; and a short bibliography.|
|Levels:||Middle School (6-8), High School (9-12)|
|Math Topics:||Conic Sections and Circles, Meteorology, Optics|
The Math Forum is a research and educational enterprise of the Drexel University School of Education.