刀口效應(Knife-edge effect)即電磁波傳播在遇到障礙物時,與障礙物邊緣相遇部分的電磁波傳播方向發生改變而進入障礙物的蔭影區域的這種現象[1]。 可用惠更斯-菲涅耳原理解析刀口效應:這原理認為;當傳播的電磁波遇到障礙物邊緣時,此處就成了第二個波源;同時產生新的波前鋒,改變了前進的方向而可進入障礙物的蔭影部份。電磁波不再受到阻擋。

參考文獻

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.