reference documentation on 干涉

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 synonyms   semantic net   example   wikipedia   Ebay   translations 
 
synonyms

干涉

插嘴, 插手, 干涉；插嘴  (Chinois trad.)

 
analogic tree

干涉

wdn

干涉；插嘴

干涉

wdn

干涉, 插手

干涉 (n.)

wdn

干涉

 
Wikipedia

干涉

维基百科，自由的百科全书

干涉(interference)為兩波重疊時組成新合成波的現象。

目录

  • 1 波的重疊原理
  • 2 干涉的種類
  • 3 駐波
  • 4 參見
  • 5 外部連結

波的重疊原理

兩波在同一介質中傳播，相向行進而重疊時，重疊範圍內介質的質點同時受到兩個波的作用。若波的振幅不大，此時重疊範圍內介質質點的振動位移等於各別波動所造成位移的矢量和，稱為波的重疊原理。

  • 同相(in phase)：若兩波的波峰（或波谷）同時抵達同一地點，稱兩波在該點同相。
  • 反相(out of phase)：若兩波之一的波峰與另一波的波谷同時抵達同一地點，稱兩波在該點反相。

兩波交會後的波形和行進速度，不會因為曾經重疊而發生變化。

干涉的種類

  • 相長干涉(constructive interference)
    兩波重疊時，合成波的振幅大於成分波的振幅者，稱為相長干涉或建設性干涉。
    若兩波剛好同相干涉，會產生最大的振幅，稱為完全相長干涉或完全建設性干涉(fully constructive interference)。
  • 相消干涉(destructive interference)
    兩波重疊時，合成波的振幅小於成分波的振幅者，稱為相消干涉或破壞性干涉。
    若兩波剛好反相干涉，會產生最小的振幅，稱為完全相消干涉或完全破壞性干涉(fully destructive interference)。

駐波

兩個振幅、波長、週期皆相同的正弦波相向行進，會干涉而形成駐波。參見：駐波

參見

  • 波
  • 相位

外部連結

  • 水波干涉的模擬 1
  • 水波干涉的模擬 2
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