V2EX reciprocal space

Reciprocal Space

释义 Definition

倒易空间 / 逆空间:物理学与晶体学中用于描述波矢(k)空间频率的抽象空间,与“实空间(real space)”互为傅里叶变换的对应(即“傅里叶共轭空间”)。它常用于理解与计算衍射图样晶体周期性能带结构等。(也常写作 k-space,尤其在固体物理与成像领域。)

发音 Pronunciation (IPA)

/rsprkl spes/

词源 Etymology

reciprocal 源自拉丁语 reciprocus,含“相互的、往返的”之意;在数学与物理语境中进一步引申为“互为对应/互为倒数或对偶”的概念。space 来自拉丁语 spatium(“空间、距离”)。合在一起,“reciprocal space”强调它与实空间在数学上相互对应(对偶),常通过傅里叶变换联系。

例句 Examples

Reciprocal space helps explain why crystals produce sharp diffraction spots.
倒易空间有助于解释为什么晶体会产生清晰的衍射斑点。

By mapping the electron density from real space into reciprocal space, researchers can identify periodic structures ad estimate lattice parameters.
通过将实空间中的电子密度映射到倒易空间,研究人员可以识别周期结构并估算晶格参数。

相关词 Related Words

文学与经典著作中的用例 Literary & Notable Works

  • Elements of X-Ray Diffraction(B. D. Cullity & S. R. Stock):用倒易空间与倒易点阵系统讲解 X 射线衍射与结构分析。
  • Introduction to Solid State Physics(Charles Kittel):在能带、布里渊区与波矢表述中频繁使用倒易空间框架。
  • Structure of Materials: An Introduction to Crystallography, Diffraction and Symmetry(Marc De Graef & Michael E. McHenry):以倒易空间直观连接晶体对称性与衍射实验结果。
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