Thursday 8 November 2012

Bragg's Law and Diffraction:

Bragg's Law refers to the simple equation:


nlambda = 2d sintheta 

derived by the English physicists Sir W.H. Bragg and his son Sir W.L. Bragg in 1913 to explain why the cleavage faces of crystals appear to reflect X-ray beams at certain angles of incidence (theta, theta). The variable d is the distance between atomic layers in a crystal, and the variable lambda lambda is the wavelength of the incident X-ray beam (see applet); n is an integer. For more click here.

Courtesy: http://skuld.bmsc.washington.edu 

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