x-ray diffraction

x-ray diffraction

noun Physics.
diffraction of x-rays by the regularly spaced atoms of a crystal, useful for determining the arrangement of the atoms.

Origin:
1940–45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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X-ray diffraction is always a great word to know.
So is energy level. Does it mean:
a photon of penetrating electromagnetic radiation emitted from an atomic nucleus; electromagnetic radiation with wavelengths shorter than 1/10 of a nanometer
a quantized state in which matter may exist, having constant energy and separated from others in the series by finite quantities of energy
Collins
World English Dictionary
X-ray diffraction
 
n
the scattering of X-rays on contact with matter, resulting in changes in radiation intensity, which is used for studying atomic structure

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
x-ray diffraction  
The scattering of x-rays by crystal atoms, producing a diffraction pattern that yields information about the structure of the crystal. X-ray diffraction is used in x-ray crystallography.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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