is the change in direction of a wave at a boundary. When light is refracted as it enters a prism, each colour is refracted by a different amount. Because each colour has a different wavelength ...

Browsing the catalog of your favorite optics supplier you will find a large variety of prisms used to reflect, invert, rotate, disperse, steer, and collimate light. It is important to point out ...

This explains why a prism can disperse white light into ... is incident on the surface of water as shown in the diagram. State whether the light travels faster in air or water.