蛍けい光こう体たい

noun

fluorescent substance; phosphor

Technical term for a material that emits light when exposed to radiation or other energy sources. Used in contexts like fluorescent lamps, cathode-ray tubes, and LED phosphors.

See also: 蛍光物質

• 蛍けい光こう灯とうの内うち側がわには蛍けい光こう体たいが塗ぬられている。

  The inside of a fluorescent lamp is coated with a fluorescent substance.

• この蛍けい光こう体たいは紫し外がい線せんを可か視し光こうに変へん換かんする。

  This phosphor converts ultraviolet light into visible light.