The important property of prisms in this article is their ability to redirect light through refraction and reflection. A collection of deck lights used to direct sunlight below deck in ships.

This explains why a prism can disperse white light into different colours. The change in refraction is quite small and is only significant for some geometries. A ray of light is incident on the ...

The diagram shows refraction of light passing into ... at the boundary between glass and air as it leaves the prism. When white light passes through a prism it can be split up into its colours.

Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

Scientists have long sought to control light in ways that appear to defy the laws of Nature. Negative refraction - a phenomenon where light bends in the opposite direction to its usual behaviour ...