2d sin θ = nλ for constructive reflection from parallel crystal planes; X-ray crystallography, neutron diffraction; 1915 Nobel.
Bragg's law
Related concepts
- Huygens' principle
- Acousto-optic modulation
- Bragg law: 2d sin θ = nλ (W.L. & W.H. Bragg 1913, Nobel 1915)
- X-ray crystallography & phase problem
- Systematic extinction rules from structure factor F(hkl) (crystallography)
- Bragg diffraction: n λ = 2 d sin θ (Bragg & Bragg 1913)
- Bragg: n=1, λ=d ⇒ sin θ = 1/2, θ = π/6 (canonical first-order reflection)
- Scherrer equation: crystallite size t = Kλ/(β cos θ)
- Scherrer at (K, λ, β, θ) = (1, π, π, 0): t = 1 (unit crystallite-size canonical)