A diffraction grating splits a beam of light up into multiple beams whose position is determined by both the wavelength of the light and the properties of the grating.

A preprint describing the experiment is available via arXiv and is yet to be peer-reviewed. [H/T: New Scientist] White light passing through a diffraction grating creates this pattern.

The Grating Challenge This page contains hints, solutions, and advanced challenges for our diffraction grating challenge. If you would like a grating (or a set for your class if you are a teacher), ...

Scientists have observed “bending” atoms using a crystal grating—an experiment once believed impossible at the high energies required. The authors of a new, non-peer reviewed study detail ...

Recently, physicists from The Massachusetts Institute of Technology conducted a new experiment with slits through which light was transmitted with incredible atomic precision. The results of their ...

ZHOUFENG WANG, GANG BAO, JIAQING LI, PEIJUN LI, HAIJUN WU, AN ADAPTIVE FINITE ELEMENT METHOD FOR THE DIFFRACTION GRATING PROBLEM WITH TRANSPARENT BOUNDARY CONDITION, SIAM Journal on Numerical Analysis ...

Essentially, they form a diffraction grating, except photonic crystals only produce certain colors, or wavelengths, of light, while a diffraction grating will produce the entire spectrum, much ...