媒ばい質しつ

noun

medium; transmission medium

Physics term for a substance or material that carries energy waves such as sound, light, or electromagnetic signals.

• 音おとは空くう気きなどの媒ばい質しつを伝つたわって進すすむ。

  Sound travels through a medium such as air.

• 光ひかりは媒ばい質しつがなくても真しん空くう中ちゅうを進すすむことができる。

  Light can travel through a vacuum without a medium.