翻訳と辞書
Words near each other
・ Friedel
・ Friedel Berges
・ Friedel de Wet
・ Friedel Dzubas
・ Friedel family
・ Friedel Grützmacher
・ Friedel Holz
・ Friedel Klussmann
・ Friedel Lutz
・ Friedel oscillations
・ Friedel Overwien
・ Friedel Rausch
・ Friedel Sellschop
・ Friedel Stern
・ Friedel Tietze
Friedel's law
・ Friedel's salt
・ Friedelehe
・ Friedelin
・ Friedelin synthase
・ Friedelind Wagner
・ Friedelshausen
・ Friedelsheim
・ Friedel–Crafts reaction
・ Friedemann
・ Friedemann Bach (film)
・ Friedemann Eichhorn
・ Friedemann Friese
・ Friedemann Kupsa
・ Friedemann Layer


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Friedel's law : ウィキペディア英語版
Friedel's law
Friedel's law, named after Georges Friedel, is a property of Fourier transforms of real functions.
Given a real function f(x), its Fourier transform
:F(k)=\int^_f(x)e^dx
has the following properties.
*F(k)=F^
*(-k) \,
where F^
* is the complex conjugate of F.
Centrosymmetric points (k,-k) are called Friedel's pairs.
The squared amplitude (|F|^2) is centrosymmetric:
* |F(k)|^2=|F(-k)|^2 \,
The phase \phi of F is antisymmetric:
* \phi(k) = -\phi(-k) \,.
Friedel's law is used in X-ray diffraction, crystallography and scattering from real potential within the Born approximation. Note that a (twin operation ) (aka ''Opération de maclage'') is equivalent to an inversion centre and the intensities from the individuals are equivalent under Friedel's law.〔Friedel G (1904). "Étude sur les groupements cristallins". Extract from ''Bullettin de la Société de l'Industrie Minérale'', Quatrième série, Tomes III et IV. Saint-Étienne: Societè de l'Imprimerie Thèolier J. Thomas et C.〕〔Friedel G. (1923). ''Bull. Soc. Fr. Minéral.'' 46:79-95.〕
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Friedel's law」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.