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 ...

GRAND RAPIDS, Mich — Viewers across West Michigan were in awe of the patches of rainbow popping up across the area on Sunday. Sundogs are a result of the refraction of light when the sun's rays ...

Across the Ozarks, many people noticed an unusual sight in the sky on Tuesday. A partial rainbow near the sun. The optical illusion is most commonly referred to as a sundog, or a mock sun. Sundogs ...