Final answer:
Refraction is the bending of light as it passes from one medium to another.
Step-by-step explanation:
When light passes from one medium to another, it can be bent or redirected. This phenomenon is called refraction. Refraction occurs due to a change in the speed of light as it travels through different materials. One common example of refraction is when light passes through a prism and separates into its component colors, creating a rainbow effect.
Learn more about Refraction of light