V2EX conductance

Conductance

定义 Definition

Conductance 是一个物理学术语,指电导,即物体传导电流的能力,是电阻的倒数。单位为西门子(siemens, S)。也可泛指物质传导热量、声音等的能力。

发音 Pronunciation

/kndktns/

例句 Examples

The conductance of copper is much higher than that of rubber.
铜的电导率远高于橡胶。

Engineers measured the thermal conductance of the new insulation material to determine whether it met the building's energy efficiency standards.
工程师们测量了新隔热材料的热传导率,以确定其是否符合建筑的能效标准。

词源 Etymology

Conductance 源自拉丁语 conducere,意为"引导、带领",由 **con-**(一起)和 ducere(引导)组成。英语中先有动词 conduct(传导),后加上名词后缀 -ance 构成 conductance,表示"传导的能力或程度"。该词在19世纪随着电学研究的发展而被广泛使用,由英国物理学家 Oliver Heaviside 于1885年左右正式引入,用以表示电阻倒数的概念。

相关词汇 Related Words

文学与学术引用 Literary & Academic References

  • 《费曼物理学讲义》The Feynman Lectures on Physics) Richard Feynman 在讲解电路理论时详细讨论了 conductance 与 resistance 的关系。
  • 《电磁理论》Electromagnetic Theory) Oliver Heaviside 的经典著作,正是他系统性地引入了 conductance 这一术语。
  • 《普通物理学》University Physics) Young & Freedman 编著的经典教材中,conductance 作为电学基本概念被详细阐述。
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