V2EX ray diagram

Ray Diagram

Definition / 定义

ray diagram(光线图/射线图):在几何光学中用来表示光线在反射、折射以及通过透镜、镜面等光学元件时传播路径的示意图,常用于判断成像位置、大小、正倒、虚实等特征。(在物理课与光学入门中非常常见)

Pronunciation / 发音

/re darm/

Examples / 例句

Please draw a ray diagram for this lens.
请为这个透镜画一张光线图。

Using a ray diagram, we can determine whether the mirror forms a real image or a virtual one and where it appears.
通过光线图,我们可以判断镜面形成的是实像还是虚像,以及它出现的位置。

Etymology / 词源

ray 来自拉丁语 radius,原意是“光线、辐射线、车轮辐条”;diagram 来自希腊语 diagramma,意为“图示、标记出来的东西”。合起来 ray diagram 字面意思就是“用图示画出的光线路径”,后来固定为几何光学中的标准作图术语。

Related Words / 相关词汇

Literary Works / 文学作品举例

  • University Physics(Young & Freedman):在透镜与镜面成像章节中大量使用 ray diagram 作为标准分析方法。
  • Fundamentals of Physics(Halliday, Resnick & Walker):讲解反射、折射与薄透镜成像时频繁出现 ray diagram
  • Optics(Eugene Hecht):在几何光学与成像部分用 ray diagram 辅助推导与解释。
  • Physics for Scientists and Engineers(Serway & Jewett):透镜/镜面作图题与概念讲解中常见 ray diagram
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