Light is a type of electromagnetic radiation that can be detected by the eye. It travels as a transverse wave. Unlike a sound ... the light is travelling. A ray diagram shows how light travels ...

Electromagnetic radiation is the general term for the more familiar light and radio waves, but also includes ... a quasar would span most of the diagram above and the amount of power would change very ...

A ray diagram showing refraction at the boundary between air and glass Refraction can cause optical illusions as the light waves ... Although the wave slows down, its frequency remains the same ...