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*'''Diffraction Gratings''' can resolve very fine details in the spectrum, making them useful in spectroscopy.
{| class="wikitable"|-|[[File:DiffractionGratingExperimentRed.png|center|150px]]|[[File:DiffractionGratingExperimentGreen.png|center|150px]]|[[File:DiffractionGratingExperimentBlue.png|center|150px]]|-| style="height:20px; width:150px; text-align:center;" |This image shows a '''diffraction grating'''| style="height:20px; width:150px; text-align:center;" |This image shows a '''diffraction grating'''| style="height:20px; width:150px; text-align:center;" |This image shows a '''diffraction grating'''|}
===Formula===
*The [[diffraction]] angle depends on the [[wavelength]] of the [[Visible Light|light]] and the [[Grating Spacing|spacing of the slits]] with the relation given by this formula: