燐りん光こう

noun

phosphorescence

Refers to the emission of light from a substance without noticeable heat, often after exposure to radiation. Common in scientific and technical contexts.

• 燐りん光こうを発はっする物ぶっ質しつは、暗くら闇やみでぼんやりと光ひかる。

  Substances that emit phosphorescence glow faintly in the dark.

• 時計とけいの文も字じ盤ばんには燐りん光こう塗と料りょうが使つかわれている。

  Phosphorescent paint is used on the watch dial.