Canadian Medical Guide > Analytical, Diagnostic and Therapeutic Techniques and Equipment > Investigative Techniques > Chemistry, Analytical > Crystallography Terms and Definitions

Crystallography

Medical Definition:	The branch of science that deals with the geometric description of crystals and their internal arrangement. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Guide Notes:	NIM; coord with crystalline substance (IM or NIM); DF: CRYSTALLOGR

Crystallography Categories.

	Neutron Diffraction - The scattering of NEUTRONS by matter, especially crystals, with accompanying variation in intensity due to interference effects. It is useful in CRYSTALLOGRAPHY and POWDER DIFFRACTION.
	Powder Diffraction - Method of using a polycrystalline powder and Rietveld refinement (LEAST SQUARES ANALYSIS) of X-RAY DIFFRACTION or NEUTRON DIFFRACTION. It circumvents the difficulties of producing single large crystals.
	X-Ray Diffraction - The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Crystallography Medical Definitions and Terms

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