V2EX light shift

Light Shift

Definition / 释义

light shift:光的“偏移/移动”;常指光谱或频率的变化(如多普勒效应导致的红移、蓝移),也可泛指光线/灯光的变化或转移。在科技语境中更常用作 (Doppler) shift of light(光的多普勒频移)。

Pronunciation / 发音

/lat ft/

Examples / 例句

The light shift was noticeable when the car sped past.
当汽车飞驰而过时,光的偏移很明显。

Astronomers measured a slight light shift in the star’s spectrum, suggesting it is moving away from Earth.
天文学家在这颗恒星的光谱中测到轻微的光偏移,这表明它正在远离地球。

Etymology / 词源

light(光)+ shift(移动、改变)构成的名词短语,字面意思就是“光的改变/位移”。其中 shift 源自古英语 sciftan,含“转换、替换”之意;组合后常用于描述“光的变化”,尤其在物理与天文学中指光的频率/波长变化。

Related Words / 相关词

Literary Works / 文学与作品例证

  • 该短语作为固定搭配在传统小说诗歌中不算常见;更常见于科学写作与科普文本,尤其以 “Doppler shift of light”“spectral shift of light” 等形式出现。
  • 常见载体包括:天体物理学教材、关于恒星光谱与宇宙膨胀的科普书、以及以“Doppler shift of light/Light shift”为题或关键词的光学与天文学论文(用于讨论红移、蓝移及光谱测量)。
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