glow-in-the-dark

Glow-in-the-dark materials contain special substances called phosphors that can absorb light energy when exposed to a light source. This energy excites the phosphors, which then slowly release it as visible light over time, creating a glowing effect in darkness. The process is called phosphorescence, a type of photoluminescence. Once charged by exposure to light, these materials can glow for minutes to hours, gradually fading as the stored energy is released. Glow-in-the-dark items are commonly used in safety signs, toys, and decorations, providing illumination without electricity.