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.

A ray diagram showing refraction at the boundary between air and glass Refraction can cause optical illusions as the light waves appear to come from a different position to their actual source.

(Nanowerk News) For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays - without the need for artificially manufactured metamaterials. Scientists ...

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.