There are several amazing effects–or phenomena–in the world that are the result of refraction. You see one on the top of the screen: a rainbow. Here are a few others:
The Flat Sun Effect: When the sun is about to set, and is close to the horizon, it appears to be slightly squashed. This is because the rays of light from the bottom of the sun are refracting more than those from the top.
A mirage is the bending light as it travels from cold air into warmer air. The light rays bend away from the normal as the temperature gets warmer. This can happen on hot pavement or in the desert, but also in the arctic.
You know that rainbows are created when white light is dispersed through a prism into separate colours. Rainbows also occur during or after rain, because the water droplets in the air act as prisms and refract the sun’s light, creating a rainbow effect.