V2EX capillarity

Capillarity

Definition / 释义

毛细作用;毛细现象:液体在非常细的管道、孔隙或纤维间自动上升或渗透的现象,主要由表面张力以及液体与固体表面的黏附力/内聚力共同作用引起。(常见于水在纸巾中“爬升”、土壤吸水、植物导水等情境)

Pronunciation / 发音

/kplrti/

Examples / 例句

Water rises in a thin tube because of capillarity.
水会在细管中上升,这是由于毛细作用。

The study showed that soil capillarity can transport dissolved salts upward, accelerating surface crust formation during drought.
研究表明,土壤的毛细作用会把溶解盐分向上输送,在干旱时加速地表结壳的形成。

Etymology / 词源

capillarity 来自拉丁语 capillaris(“头发的、像头发一样细的”),词根 capill-capillus(“头发”)相关;后缀 -ity 表示“性质/状态”。因此该词字面含义可理解为“像头发一样细所带来的性质”,指的就是细小管道或孔隙中出现的液体行为。

Related Words / 相关词

Literary Works / 文学与经典作品

(该词更常见于科学经典与科普写作中,较少出现在小说等纯文学文本里。)

  • Thomas Young:《An Essay on the Cohesion of Fluids》(1805,讨论液体内聚与毛细现象)
  • Pierre-Simon Laplace:《Traité de mécanique céleste》(《天体力学》,含毛细作用的理论讨论)
  • Michael Faraday:《Experimental Researches in Electricity》(《电学实验研究》,多处提及液体与毛细现象在实验中的影响)
  • J. D. van der Waals / J. S. Rowlinson 等关于分子作用与界面现象的经典论述与教材中,亦常用 capillarity 讨论界面与毛细效应
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