A spectrograph tells us which colors (wavelengths of light) are in a luminous source.
A Spectograph breaks light into colors and produces and image of the resulting spectrum.
nothing
A grating or a prism
an apparatus for photographing or otherwise recording spectra
a spectograph
a spectograph
is a device that collect starlight of a star by considering their wavelenght
i would use a glass prism or a spectograph
you tell me
Tell us about an experince for MCA
Yes you tell him because us guys want to know we would tell you it may not be the way you want us to tell you girls but we do so i think that you should tell us if you like us
It can tell us whether a star, or a galaxy, is moving towards us or away from us.