begin mathsize 48px style n lambda equals 2 d subscript h k l end subscript sin theta end style

n = An integer ;   λ = Wavelength of the incident light ; dhkl= Lattice Spacing ; θ = Angle of incidence ; 




When x-rays are applied to a crystal, it gets scattered. The angle of incidence is adjusted so that the scattered intensity of the x-ray is maximum. At this instance Bragg's law correlates the angle of incidence with the lattice spacing and the wavelength of the incident x-ray.    

Generate Citation