binâbnegâr bâ pâšeâš-e chalipaayi, ~ ~ ~ xâji
Fr.: spectrographe à dispersion croisée
A spectrograph that utilizes cross dispersion.
binâbnegâr-e narde-yi (#)
Fr.: spectrographe à échelle
A spectrograph that uses an echelle grating to disperse the light.
Fr.: spectrographe à fente
A type of spectrograph that uses a slit to provide resolution.
An instrument that disperses the light into spectral lines and records them.