# diffraction

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## 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 ?
Based on the above analysis, the diffracted P-wave and the reflected channel wave are both the effective waves of advanced detection of a small fault in coal roadway.
Determination as to whether a wave is diffracted uses the knife-edge effect, whereby a portion of the incident wave strikes the edge of a building or other such structure and is diffracted [10].
h] is constant, gives only a slight reduction of the distance between Tx and Rx points (for reflected and diffracted rays), so the results are comparable for different values of [h.
The fields radiated by these antennas when mounted on infinite ground planes, which are well known, are supplemented by the fields diffracted at the edges of the finite ground planes.
Hence the asymptotic incident diffracted PO field is obtained as
Here we restrict ourselves to the case in which the transmitted and diffracted waves--two-wave approximation--satisfy the Laue equation.
Think of it this way: a straight vane concentrates all its diffracted light into a narrow streak.
jpg" alt="Light is diffracted on a filter during a partial solar eclipse in Wuhan, Hubei province July 22, 2009.
When polycrystalline materials are irradiated with neutrons, a strong diffracted effect occurs at specific angles governed by the Bragg law (Figure 2).
More often its rays only reach us dimly, diffracted through the prism of paraphrase or polemic.
Diffracted power and atomic force microscopy (AFM) measurements were taken to compare the mold, an optical grating element itself, with he molded replicas.

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