diffraction


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

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 ?
Ramsey even admitted knowing that the diamonds were being sold at hugely inflated prices, prompting the judge to say: "Mr Ramsey must therefore have known perfectly well that investors would almost inevitably suffer loss through the transactions that Diffraction was facilitating.
However, due to the small scale of the fault and the appear wave impedance difference between coal seam and surrounding rock (the average density and P-wave velocity of coal seam and surrounding rock are respectively as: [rho]1=1400Kg/m3, V1=2000m/s; [rho]2=2800Kg/m3, V2=3500m/s), the obvious diffraction could be formed in the process of seismic advanced detection in coal roadway, as shown in Figure 2.
Crown's diffraction levels are the brightest in the industry.
We determine the exposure values for each color channel given by laser wavelengths, obtaining the highest efficiencies in monocolor diffraction gratings.
The new Optical Property Optimizer (OPO) allows users to easily manipulate the optical properties necessary to calculate particle size distributions from laser diffraction data, helping them to experimentally determine the ideal settings for a given application.
5, it shows catalytic activity at 450 oC is the best and from XRD spectrogram we can also see the diffraction peak intensity of Ag crystal at 450 oC is higher and sharper than that at 400 oC and 500 oC.
The low stray light and high diffraction efficiency of Shimadzu Corporation diffraction gratings finds a wide range of applications including analytical instruments used for research in the life sciences, chemistry, and environment, synchrotron radiation, as well as optical communications.
According to Axion Chemical Engineer, Richard McKinlay, who helped to build a demonstration unit for the project, it was the first time the diffraction grating concept had been used in this type of sorting application.
Depending on the geometry of the problem, UTD can provide other diffraction mechanisms (slope diffraction, equivalent current contribution) to increase the prediction accuracy.
Diffraction gratings made of different polymers can be fabricated by different methods including micromolding (11,12), hot embossing (13), replication molding (14), soft lithography, and holographic techniques (15,16).
New experimental data published by Malvern Instruments illustrate the real-world capability and flexibility of the Mastersizer 3000 laser diffraction system for the particle size measurement of dry powders.