# diffraction

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Related to Diffraction pattern: Fraunhofer diffraction pattern

## diffraction

[dĭ-frak´shun]
the bending or breaking up of a ray of light into its component parts.

## dif·frac·tion

(di-frak'shŭn),
Deflection of the rays of light from a straight line in passing by the edge of an opaque body or in passing an obstacle of about the size of the wavelength of the light.
[L. dif- fringo, pp. -fractus, to break in pieces]

## diffraction

/dif·frac·tion/ (dĭ-frak´shun) the bending or breaking up of a ray of light into its component parts.

## diffraction

[difrak′shən]
Etymology: L, dis, opposite of, frangere, to break
the bending and scattering of wavelengths of light or other radiation as the radiation passes around obstacles or through narrow slits. X-ray diffraction is used in the study of the internal structure of cells. See also refraction.

## dif·frac·tion

(di-frak'shŭn)
Deflection of the rays of light from a straight line in passing by the edge of an opaque body or in passing an obstacle of about the size of the wavelength of the light.
[L. dif- fringo, pp. -fractus, to break in pieces]

## diffraction

deflection of light rays by their passage from one medium into another, e.g. from air into water

## diffraction

Deviation of the direction of propagation of a beam of light, which occurs when the light passes the edge of an obstacle such as a diaphragm, the pupil of the eye or a spectacle frame. There are two consequences of this phenomenon. First, the image of a point source cannot be a point image but a diffraction pattern. This pattern depends upon the shape and size of the diaphragm as well as the wavelength of light. Second, a system of close, parallel and equidistant grooves, slits or lines ruled on a polished surface can produce a light spectrum by diffraction. This is called a diffraction grating. See Airy's disc; diffraction fringes; Maurice's theory.

## diffraction

the bending or breaking up of a ray of light into its component parts.

x-ray diffraction
a method used to determine the three-dimensional structure of the single object, e.g. protein molecule, that composes the crystal. Based on recording and analyzing the diffraction pattern of an x-ray beam passing through a crystalline structure, either organic or inorganic.
References in periodicals archive ?
the diffraction pattern undergoes a simple translation on the screen, without any modification of interfringe distance, while (ii) according to the relations (4) and (5) a change of h-[?
2-5 demonstrate, a subtraction of the diffraction pattern of the observed extender would lead essentially to a baseline.
The corresponding diffraction pattern will consist of straight bands which are parallel to the edges, and thus it will again be sufficient to compute its variation along the x-axis.
Although the positions of the atoms in the crystal determine the nature of this so-called diffraction pattern, the puzzle for chemists was that they couldn't readily work backwards from the diffraction data to the atomic arrangement.
The XRD diffraction patterns of these layers showed predomination of the phase of monoclinic silver sulphide acanthite [Ag.
A sample of PY6, an arylide yellow, appears to match the diffraction pattern of PY1, a more commonly used arylide yellow.
The diffraction pattern obtained for HA coating was compared with the standard XRD pattern of HA powder.
The resulting seismic response will thus consist of a complicated diffraction pattern dominated by side swipe in 2D surveys.
Hair molecules from cancer patients produced an unusual X-ray diffraction pattern.
Moreover, the PP is nonspherulitic in nature with a well-defined x-ray diffraction pattern of monoclinic PP.
The relative peak intensity ratio is represented by the formula: B/Axl00 wherein A and B are intensities of a strongest peak and a next stronger peak appears in a diffraction angle 2[theta] ranging from 15[degrees] to 25[degrees] of a CuK[alpha] X-ray diffraction pattern of the layer made of the polyamide resin composition.
The specific and localized precipitation of TMB on the diffraction pattern causes a signal increase.

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