V2EX external field

External Field

释义 Definition

外部场;外加场:指来自系统外部、对研究对象产生影响的场(常见于物理与工程语境),例如外加电场磁场引力场等,用来改变或探测材料/粒子/电路的行为。(在更一般的语境中,也可指“外部环境因素/外部作用”。)

发音 Pronunciation

/kstrnl fild/

例句 Examples

An external field can align the molecules.
外加场可以使分子取向排列。

In the simulation, we varied the external field strength to observe how the system’s polarization and phase transition behavior changed over time.
在模拟中,我们改变外部场的强度,以观察系统的极化以及相变行为如何随时间变化。

词源 Etymology

external 来自拉丁语 externus(意为“外面的、外部的”),与 “outside(外部)” 的概念同源;field 原意为“田地、开阔地”,在科学语境中引申为“在空间中分布并能对物体产生作用的量”(如电磁场)。合在一起,external field 就是“从系统外部施加/存在的场”。

相关词 Related Words

文学与著作 Literary Works

  • A Treatise on Electricity and Magnetism(James Clerk Maxwell)
  • Classical Electrodynamics(John David Jackson)
  • The Feynman Lectures on Physics(Richard P. Feynman 等)
  • Electrodynamics of Continuous Media(Landau & Lifshitz)
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