phosphorescent screen

A phosphorescent screen is a display technology that emits light after being exposed to a light source, due to a material called phosphor. When the phosphor absorbs energy from an initial flash of light, it stores that energy and then slowly releases it as visible light over time, creating a glowing effect. This property allows the screen to display images or patterns even after the original light source is gone, resulting in a persistent, glowing image. Phosphorescent screens are used in applications like glow-in-the-dark signs, watch dials, and some display technologies where a lasting luminous effect is desired.