See Double

(Science content)

First we want to ask ourselves what is refraction? Refraction is the bending of a wave when it enters a medium where it's speed is different.Refraction is responsible for image formation by lenses and the eye. Refraction makes objects appear different, for example a ruler looks bent when standing in water.

Tennessee Standards:

GLE 0407.10.2 Investigate how light travels and
is influenced by different types of materials and
surfaces.