from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The fundamental law of x-ray crystallography, nλ = 2dsinθ, where n is an integer, λ is the wavelength of a beam of x-rays incident on a crystal with lattice planes separated by distance d, and θ is the Bragg angle.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. equates the angle between the incident and scattered ray to the spacing between the crystal planes and the wavelength of the radiation -


After Sir William Henry Bragg and Sir William Lawrence Bragg.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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