Diffraction gratings

Diffraction gratings are optical components used to disperse light into individual colors or wavelengths, which have largely replaced prisms in the study of light spectra. They are essential in the field of spectroscopy for resolving fine details in the spectrum of emitted or reflected light.
 Joseph von Fraunhofer Germany 1821 Diffraction gratings

Diffraction gratings are optical components used to disperse light into individual colors or wavelengths, which have largely replaced prisms in the study of light spectra. They are essential in the field of spectroscopy for resolving fine details in the spectrum of emitted or reflected light.