The law of reflection ... the boundary between the two transparent materials. This change in direction of a beam of light as it travels from one material to another is called refraction.

In this Snapshot we will discuss the difference between reflection and refraction, how a lens focuses light and how a lens' focal length will impact an image. Give it a shot: shine a flashlight ...

They found that, at the interface between two adjacent facets of the crystal, airborne acoustic waves could undergo negative refraction without reflection. The authors’ results represent the ...