The rare phenomenon is believe to be a split sunset - a spectacle that occurs when light scatters ... in the sky. Across the country, people watched in confusion as the sky, sun, and moon all ...

In 1873, the German physicist Ernst Abbe realized that the resolution of optical imaging instruments, including telescopes and microscopes, is fundamentally limited by the diffraction of light.

A U.K.-Portuguese research group is proposing a new solar cell design based on diffraction gratings – optical components that split and diffract light into several beams. They claim this could ...