Definition & Betydelse | Engelska ordet DIFFRACTION

Definition av DIFFRACTION

1. diffraktion

Exempel på hur man kan använda DIFFRACTION i en mening

• His wide-ranging research in physical science included chemical kinetics, x-ray diffraction, and adsorption of gases.
• Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.
• Many different examples exist, and there are very large fields where forward scattering dominates, in particular for electron diffraction and electron microscopy, X-ray diffraction and neutron diffraction.
• The Cornu spiral, a graphical device for the computation of light intensities in Fresnel's model of near-field diffraction, is named after him.
• By measuring the angles and intensities of the X-ray diffraction, a crystallographer can produce a three-dimensional picture of the density of electrons within the crystal and the positions of the atoms, as well as their chemical bonds, crystallographic disorder, and other information.
• Path loss may be due to many effects, such as free-space loss, refraction, diffraction, reflection, aperture-medium coupling loss, and absorption.
• As such, the Huygens-Fresnel principle is a method of analysis applied to problems of luminous wave propagation both in the far-field limit and in near-field diffraction as well as reflection.
• Note that X-ray diffraction is sometimes considered a sub-set of X-ray scattering, where the scattering is elastic and the scattering object is crystalline, so that the resulting pattern contains sharp spots analyzed by X-ray crystallography (as in the Figure).
• Atomic force microscopy (AFM) or scanning force microscopy (SFM) is a very-high-resolution type of scanning probe microscopy (SPM), with demonstrated resolution on the order of fractions of a nanometer, more than 1000 times better than the optical diffraction limit.
• The f-number is also known as the focal ratio, f-ratio, or f-stop, and it is key in determining the depth of field, diffraction, and exposure of a photograph.
• Because of this, diffraction gratings are commonly used in monochromators and spectrometers, but other applications are also possible such as optical encoders for high-precision motion control and wavefront measurement.
• Assuming no diffraction, for a collimated beam (such as a point source) of light, only the umbra is cast.
• They use electron optics that are analogous to the glass lenses of an optical light microscope to control the electron beam, for instance focusing them to produce magnified images or electron diffraction patterns.
• In long-distance transmission systems, the coherence time may be reduced by propagation factors such as dispersion, scattering, and diffraction.
• OPL and OPD are important because they determine the phase of the light and govern interference and diffraction of light as it propagates.
• In 1954, Ramachandran & Kartha (13, 14) advanced a structure for the collagen triple helix on the basis of fiber diffraction data.
• While crystals, according to the classical crystallographic restriction theorem, can possess only two-, three-, four-, and six-fold rotational symmetries, the Bragg diffraction pattern of quasicrystals shows sharp peaks with other symmetry orders—for instance, five-fold.
• Oxford Diffraction, a British company specializing in X-ray diffraction equipment, now part of Varian, Inc.
• If one lowers a grid of obstacles into the water, with the spacing between the obstacles roughly corresponding to the wavelength of the water waves, one will see diffraction from the grid.
• A hologram is a recording of an interference pattern that can reproduce a 3D light field using diffraction.

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