It is found in Aldis's “Tract on Double Refraction,” p. 7, in Preston's “Theory of Light,” third edition, p. 328, and in Basset's “Treatise on Physical Optics,” p. 115.

For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays - without the ...

Scientists have found a way to achieve negative refraction—where light bends the "wrong" way—using carefully arranged atomic ...

The change in direction of a beam of light as it travels from one material to another is called refraction. The normal is a construction line drawn at right angles to the surface of the glass block.