者,物理量之擾動也,亦蓋空間中物理量之傳播。傳波需有質,曰介質,唯電磁波重力波者,可傳之真空而可無介質也。

Thumb
水面波

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.