V2EX longitudinal wave

Longitudinal Wave

释义 Definition

纵波(longitudinal wave):一种波动形式,介质粒子的振动方向与波的传播方向平行。常见于声波(在空气中)弹簧中的压缩波等。(在物理语境中最常用;在某些场景下也会与“横波 transverse wave”对比说明。)

发音 Pronunciation (IPA)

/ln.dtju.d.nl wev/ (英)
/ln.dtu.dn.l wev/ (美)

例句 Examples

Sound in air is a longitudinal wave.
空气中的声音是一种纵波。

In a longitudinal wave, compressions and rarefactions move through the medium as energy is transferred.
在纵波中,压缩与稀疏会在介质中传播,伴随能量的传递而向前移动。

词源 Etymology

longitudinal 来自 longitude(“长度、经度”这一词族),进一步追溯到拉丁语 longitudo(“长度”),含义指“沿着长度方向的、纵向的”。wave 源自古英语 wfian(“摇动、起伏”相关),后来引申为“波浪/波动”。合起来 longitudinal wave 即“沿传播方向发生振动的波”。

相关词 Related Words

文学与著作 Literary Works

  • The Feynman Lectures on Physics(费曼《物理学讲义》)在波动与声学部分讨论纵波与介质振动。
  • University Physics(Young & Freedman《大学物理》)波动章节用“longitudinal wave”讲解声波与压缩/稀疏。
  • Fundamentals of Physics(Halliday, Resnick & Walker《物理学基础》)在机械波与声波内容中系统出现该术语。
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