V2EX ecliptic

Ecliptic

定义 Definition

ecliptic(名词/形容词)主要指“黄道”:从地球上看,太阳在一年中沿着天球运行的路径;也可指与黄道有关的(如“黄道平面”)。该词在天文学中很常见。

发音 Pronunciation (IPA)

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例句 Examples

The ecliptic is the Sun’s apparent path across the sky.
黄道是太阳在天空中看起来走过的路径。

Because Earth’s orbit defines the ecliptic plane, many planets appear to move near the ecliptic.
由于地球的公转轨道定义了黄道平面,许多行星看起来都在黄道附近运动。

词源 Etymology

来自希腊语 ekleiptikos,与“日食/月食(eclipse)”同源,原意与“发生遮蔽、(天体)掩食”有关。之所以称为“黄道”,是因为日食与月食只会在月球轨道与黄道附近相交时发生,因此这个“与掩食相关的路径/圈”在古代天文学中很关键。

相关词 Related Words

文学作品 Literary Works

  • Herman Melville, Moby-Dick(含大量航海与天象描写,常出现包括“黄道”等天文学词汇)
  • James Joyce, Ulysses(文本中穿插多种学术与科学词汇,含天文学相关表达)
  • Thomas Pynchon, Gravity’s Rainbow(涉及科学与技术语汇,包含天文学/轨道等相关用语)
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