Light is often thought to reflect from a flat surface at the same angle at which it is incident. Nature Photonics spoke to Han Woerdman about the observation of angular deviations of reflected beams.

When a light ray reaches the boundary between two transparent materials it may be refracted. If it is leaving the more dense medium, this refraction would be expected to bend the ray away from the ...

Name the process happening to the ray at the point X. There is no light emerging from the prism at Y. Name the process happening to the light at Y. How does the speed of light change, if at all ...