Where does a rainbow come from?

by: Google Images

  

       A rainbow  is an arc-shaped spectrum of color seen in the sky opposite the Sun, especially after rain. It is caused by the refraction and reflection of sunlight by droplets of water suspended in the air. The colors of a rainbow are usually identified as red, orange, yellow, green, blue, indigo, and violet.

http://eo.ucar.edu/rainbows/