Bragg's law

Scattering from arrays of atoms

In many areas of science, Bragg's law – also known as Wulff–Bragg's condition or Laue–Bragg interference – is a special case of Laue diffraction that gives the angles for coherent scattering of waves from a large crystal lattice. It describes how the superposition of wave fronts scattered by lattice planes leads to a strict relation between the wavelength and scattering angle. This law was initially formulated for X-rays, but it also applies to all types of matter waves including neutron and electron waves if there are a large number of atoms, as well as to visible light with artificial periodic microscale lattices.

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