diffraction bands

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• Diffraction — Dif*frac tion, n. [Cf. F. diffraction.] (Opt.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action… …   The Collaborative International Dictionary of English

• Diffraction grating — Diffraction Dif*frac tion, n. [Cf. F. diffraction.] (Opt.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by… …   The Collaborative International Dictionary of English

• Diffraction spectrum — Diffraction Dif*frac tion, n. [Cf. F. diffraction.] (Opt.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by… …   The Collaborative International Dictionary of English

• diffraction — [di frak′shən] n. [ML diffractio < L diffractus: see DIFFRACT] 1. the breaking up of a ray of light into dark and light bands or into the colors of the spectrum, caused by the interference of one part of a beam with another, as when the ray is …   English World dictionary

• Diffraction spectrum — Spectrum Spec trum, n.; pl. {Spectra}. [L. See {Specter}.] 1. An apparition; a specter. [Obs.] [1913 Webster] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and… …   The Collaborative International Dictionary of English

• diffraction — When a wave train passes an obstacle secondary waves are set up that interfere with the primary wave and give rise to bands of constructive and destructive interference. Around a point source of light, in consequence, is a series of concentric… …   Dictionary of molecular biology

• diffraction — /di frak sheuhn/, n. Physics. 1. the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a… …   Universalium

• diffraction — noun when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands (Freq. 1) • Derivationally related forms: ↑diffract • Hypernyms: ↑optical phenomenon • Hyponyms: ↑X ray diffraction …   Useful english dictionary

• diffraction — 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 dif rak …   Medical dictionary

• diffraction — /dəˈfrækʃən / (say duh frakshuhn) noun 1. a modification that light or other radiation undergoes when it passes by the edge of an opaque body, or is sent through small apertures, resulting in the formation of a series of light and dark bands,… …  

• Electron backscatter diffraction — An electron backscatter diffraction pattern An electron backscatter diffraction pattern of monocrystalline silicon, taken …   Wikipedia