What Causes The Refraction of Light?

Answer: Different systems have different speeds of light travel. This causes light to refract when light travels from one medium to another, the light’s speed changes, which causes the light to bend.

1. When light travels through one medium and then into another, the speed of light will change. Because of this, refraction occurs.
2. As a result of the change in medium, there is a shift in the direction that light travels from air to water.
3. The transition from water to air causes light to deviate from its original path at speed equal to three times the speed of light.