Ai
Created page with "== Introduction == A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. == Physical Description == Rainbows can be full circles. However, the observer normally sees only an arc formed by illumin..."
