光ひかりの速はやさ

noun

speed of light

Refers to the physical constant or the concept of light's speed. Often used in scientific contexts or metaphorically to indicate extreme speed.

• 光ひかりの速はやさは秒びょう速そく約やく30万まんキロメートルです。

  The speed of light is about 300,000 kilometers per second.

• 情じょう報ほうが光ひかりの速はやさで世せ界かい中じゅうに伝つたわった。

  The information spread around the world at the speed of light.