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Light Ray

释义 Definition

light ray（名词短语）：光线；光射线。指光传播方向的一条理想化“射线”，常用于物理学与几何光学中（现实中的光束通常有一定宽度）。更常见的表达是 ray of light（一束/一道光）。

发音 Pronunciation (IPA)

/lat re/

例句 Examples

A light ray entered the room through the window.
一束光线从窗户射进房间。

In geometric optics, we model each light ray as traveling in a straight line unless it reflects or refracts.
在几何光学中，我们把每一条光射线看作沿直线传播，除非发生反射或折射。

词源 Etymology

light 源自古英语 lēoht，与日耳曼语系中表示“光/明亮”的词同源；ray 源自古法语 rai，原指“光线、放射的线条”。组合成 light ray，直译为“光的射线”，强调方向性与几何描述。

相关词 Related Words

文学与经典作品 Literary Works

Opticks Isaac Newton（《光学》；讨论光线、反射与折射，常以“ray(s) of light/ light rays”的表述出现）
The Feynman Lectures on Physics Richard P. Feynman et al.（《费曼物理学讲义》；在光学与电磁学章节中频繁使用“light ray(s)”等术语）
A Brief History of Time Stephen Hawking（《时间简史》；涉及光的传播与“ray of light”等表达，用于解释相对论与宇宙学概念）

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