Definitions for "Diffraction grating"
A device used to break light into its component wavelengths. It is usually composed of a material with tiny grooves cut into it which disperses the light as it passes through or bounces off the grating (depending on the type of grating). Physicists and astronomers often use diffraction gratings to study the nature of light. See also disperson, spectrum
A very closely ruled series of lines that, through their diffraction of light, provide a spectrum of radiation that falls on it.
see grating
Keywords:  simple, example
a simple example
Keywords:  look, good, way
a good way to look for them