Bragg's law
Sign in to saveAlso known as Bragg Diffraction, Bragg equation, Bragg reflection
gives the angles for coherent and incoherent scattering from a crystal lattice
Wikidata facts
- Instance of
- physical law
- Named after
- William Lawrence Bragg
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- Commons category
- Bragg diffraction
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- Bragg's law
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Encyclopedic overview
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.
History
Excerpted from Wikipedia’s “Bragg's law” article, available under the CC BY-SA 4.0 licence.