Refraction

Refraction

1. Refraction is the bending of light which occurs when it enters a different medium

2. Light travels at different speeds in different media e.g. it is slower in a glass and water than what it is inside a vaccum

3. Media in which light travels slower are aid to be optically dense

4. It is the changing of speed which causes light to refract

5. When light enters a more optically dense material it refracts towards the normal

6. When light exists a more optically dense material it refracts away from the normal