Citation:
A diffraction grating is a device that consists of a large number of equally spaced parallel slits or lines, which can diffract light into its component wavelengths.
The phenomenon that occurs when two or more waves overlap and either reinforce or cancel each other out.
The distance between two consecutive points in a wave that are in phase with each other.
Spectrometer: An instrument that uses a diffraction grating to separate and measure the wavelengths of light.