A diffraction grating is a large collection of evenly spaced parallel slits that produces an interference pattern similar to but sharper than that of a double slit. There is constructive interference ...A diffraction grating is a large collection of evenly spaced parallel slits that produces an interference pattern similar to but sharper than that of a double slit. There is constructive interference for a diffraction grating when \(d\sin{\theta} = m \lambda \left( for m = 0,1,-1,2,-2,...\right)\), where \(d\) is the distance between slits in the grating, \(\lambda\) is the wavelength of light, and \(m\) is the order of the maximum.
