V2EX electromagnetism

Electromagnetism

释义 Definition

电磁学;电磁现象:研究电与磁的相互关系及其统一规律的物理学分支,涵盖电场、磁场、电磁波等概念。(更广义上也可指“电磁作用/电磁相互作用”。)

发音 Pronunciation

/lktromntzm/

例句 Examples

Electromagnetism explains how a magnet can attract iron.
电磁学解释了为什么磁铁能吸引铁。

The invention of radio depended on understanding electromagnetism and the way changing electric currents produce electromagnetic waves.
无线电的发明依赖于对电磁学的理解,以及变化的电流如何产生电磁波。

词源 Etymology

electromagnetism 由 **electro-**(“电的”,源自希腊语 ēlektron,原指“琥珀”,因摩擦琥珀会产生静电而得名)与 magnetism(“磁性”,与古希腊对磁石的认识有关)组合而成。该词随着19世纪电学与磁学逐渐被统一解释而普及,尤其与麦克斯韦方程组所建立的理论框架密切相关。

相关词 Related Words

文学作品中的用例 Literary Works

  • James Clerk Maxwell,《A Treatise on Electricity and Magnetism》(1873):系统奠基经典著作,集中讨论电与磁的统一理论(电磁学)。
  • Richard P. Feynman,《The Feynman Lectures on Physics, Vol. II》(1964):以教学性的方式全面讲解电磁学概念与推导。
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