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Diffraction   /dɪfrˈækʃən/   Listen
noun
Diffraction  n.  (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 of a grating of fine lines or bars. "Remarked by Grimaldi (1665), and referred by him to a property of light which he called diffraction."
Diffraction grating. (Optics) See under Grating.
Diffraction spectrum. (Optics) See under Spectrum.






Collaborative International Dictionary of English 0.48








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"Diffraction" Quotes from Famous Books



... from the fact of its coming in conveniently between Sun and Earth, so as to allow a brief glimpse of something startlingly beautiful which otherwise could never have been known, is probably responsible for only a very narrow ring of the inner radiance of pretty even breadth all round. This diffraction effect is accepted; but the problem still remains how wide this annulus may be, and whether it may vary in width from one eclipse to another. These questions once settled, the spurious structure may then be excerpted from the true. Indeed ...
— The Story of Eclipses • George Chambers

... sun's corona having been cast in doubt by a leading observer of the last total eclipse, who, from the erratic display observed in the spectroscope, has declared it a subjective phenomenon of diffraction, has led me to an examination and inquiry as to the bearing of an obscurely considered and heretofore only casually observed phenomenon seen to take place during total solar eclipses. This phenomenon, it seems to me, ...
— Scientific American Supplement, No. 441, June 14, 1884. • Various

... and Its Production. Light, Colour, Dispersion of White Light Methods of Producing the Spectrum, Glass Prism and Diffraction Grating Spectroscopes, The Spectrum, Wave Motion of Light, Recomposition of White Light, Hue, Luminosity, Purity of Colours, The Polariscope, Phosphorescence, Fluorescence, Interference.—II., Cause of Colour in Coloured Bodies. Transmitted Colours, Absorption Spectra of ...
— The Dyeing of Cotton Fabrics - A Practical Handbook for the Dyer and Student • Franklin Beech

... "Spectric" will indicate something of the nature of the technique which it describes. "Spectric" has, in this connection, three separate but closely related meanings. In the first place, it speaks, to the mind, of that process of diffraction by which are disarticulated the several colored and other rays of which light is composed. It indicates our feeling that the theme of a poem is to be regarded as a prism, upon which the colorless ...
— Spectra - A Book of Poetic Experiments • Arthur Ficke

... of the Waves of Light and Rates of Vibration of the Ether-particles Interference of Light Phenomena which first suggested the Undulatory Theory Boyle and Hooke The Colours of thin Plates The Soap-bubble Newton's Rings Theory of 'Fits' Its Explanation of the Rings Overthrow of the Theory Diffraction of Light Colours produced by ...
— Six Lectures on Light - Delivered In The United States In 1872-1873 • John Tyndall



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