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]

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

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.
References in periodicals archive ?
Crown's special effects and holographic and diffraction grating labels are over-printable, over-coatable and can be hot stamped, cold stamped or laminated.
Blazed diffraction gratings are a core component used within spectrometer and monochromator instrumentation at SLAC and many other synchrotron and free electron laser facilities around the world.
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crystal by analyzing the diffraction peak area and diffraction peak height.
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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.
To produce the diffraction gratings, we have used a sol-gel procedure combined with DIL.
Based on the type of technology, the global particle size analyzers market is categorized into six segments, namely, laser diffraction, dynamic light scattering (DLS), imaging, Coulter principle, nanoparticle tracking analysis (NTA), and others.
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Diffraction gratings are used by college students to study light wave phenomena, such as interference.
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