V2EX yottameter

Yottameter

Definition / 定义

yottameter(符号:Ym):长度单位,等于 10 米(一尧米)。用于表达极其巨大的距离,多见于理论或科普语境;日常生活中几乎不用。

Pronunciation / 发音

/jtmitr/

Examples / 例句

A yottameter is far beyond everyday distances.
尧米远远超出日常距离的尺度。

At cosmic scales, some distances are so large that you might express them in yottameters, even though astronomers usually prefer light-years.
在宇宙尺度下,有些距离大到甚至可以用尧米来表示,尽管天文学家通常更常用光年。

Etymology / 词源

yotta-(SI 国际单位制词头,表示 10)+ meter(米)构成。yotta- 于 1991 年被国际单位制采用,其命名与“八(octo/okto)”的概念有关,因为 10 = (10),也就是“千”的八次方。

Related Words / 相关词

In Literature / 文学作品中

该词在传统文学作品中非常罕见,更常见于计量与科普参考资料,例如:

  • *The International System of Units (SI Brochure)*(BIPM,国际计量局)
  • *Guide for the Use of the International System of Units (SI)*(NIST,美国国家标准与技术研究院)
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