Save guides, add subjects and pick up where you left off with your BBC account. A ray diagram shows how light travels, including what happens when it reaches a surface. In a ray diagram, you draw ...

Everything CCEA students need to know about the reflection and refraction of light for GCSE Physics. ... A ray diagram shows how light travels, including what happens when it reaches a surface.

Diagram. Here is a diagram for when it is dark outside. ... Some of the light reflected from the window goes to the person so that the person can see a reflection of the blue box and the light.