Bragg's law

noun Physics.
  1. the law that the intensity of a crystal reflection of an x-ray is a function of the angle (Bragg angle) that is the complement of the angle of incidence of the x-ray.

Origin of Bragg's law

First recorded in 1910–15; named after Sir W. H. and Sir W. L. Bragg
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British Dictionary definitions for bragg's law

Bragg's law

noun
  1. the principle that when a beam of X-rays of wavelength λ enters a crystal, the maximum intensity of the reflected ray occurs when sin θ = n λ/2 d, where θ is the complement of the angle of incidence, n is a whole number, and d is the distance between layers of atoms

Word Origin for Bragg's law

C20: named after William and Lawrence Bragg
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012