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 ?
h,k] is the extracted intensity from a Pawley refinement of the diffraction pattern, [V.
The comparison of the diffraction patterns of the three extruded pastes and fired at 1250[grados]C (Figure 8) showed no significant differences in the types of identified phases .
Caption: Figure 1: Configuration of and diffraction pattern from the University of Manchester humidity sensor.
Diffraction patterns from a damaged crystal (for example, from a surface deformed by mechanical polish) becomes noisy due to many out-of-phase scattering events, since self-similarity is diminished by disturbed the periodicity of unit cells which are the building blocks of a crystal.
The diffraction pattern of the nine slits is plotted in fig.
In a fine, unobstructed telescope, the expanded diffraction pattern seen just inside or outside of focus is a set of concentric rings, with the outermost ring slightly brighter and broader than the rest.
In the same experiment, on the detecting screen 5 it is expected to appear a diffraction pattern of the electrons.
The vital clue used by Crick and Watson, which confirmed the helix, was the striking 'X' pattern in an X-ray diffraction pattern (Figure 3) obtained by Rosalind Franklin at the University of London.
They sent their samples to be imaged with the high-intensity X-rays produced at CLS in Saskatchewan, but the diffraction pattern produced didn't match to the protein.
In this case, the thickness of the layers is selected in such a way that the bright areas of the diffraction pattern coincide at the same spot.
The diffraction pattern from the cutting plane (in the arrangement displayed in Fig.
The crystallite size was determined using the most intense peaks present in the diffraction pattern.