V2EX equipotential line

Equipotential Line

定义 Definition

等势线:在某一电场或重力场中,电势(或势能)相同的各点连成的线。在等势线上移动不做功(忽略非保守力),且等势线通常与场线(如电场线)正交。另有对应概念 equipotential surface(等势面)

发音 Pronunciation (IPA)

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例句 Examples

An equipotential line connects points with the same electric potential.
等势线连接具有相同电势的各点。

On the map of the field, the equipotential lines are closer together where the electric field is stronger, because the potential changes more rapidly there.
在该场的示意图上,电场更强的地方等势线更密集,因为那里电势变化更快。

词源 Etymology

equipotential 由 *equi-*(“相等的”,源自拉丁语 aequus)与 potential(“势;潜在的”,与拉丁语 potentia “力量/能力”相关)构成,字面义为“具有相同势的”。line 表示“线”,合起来即“等势线”。

相关词 Reated Words

文学与著作 Literary Works

  • Introduction to Electrodynamics David J. Griffiths(讨论电势图与等势线/面)
  • The Feynman Lectures on Physics, Vol. II Richard P. Feynman 等(以直观图像讲解电场与等势线)
  • University Physics Young & Freedman(基础电学章节常用“equipotential lines”)
  • A Treatise on Electricity and Magnetism James Clerk Maxwell(经典电磁学著作中涉及势与等势概念)
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