Fluorescent refers to a type of light that is produced when a substance absorbs energy and then re-emits it almost immediately. This process occurs when certain materials, like fluorescent dyes or minerals, are exposed to ultraviolet light or other forms of radiation. The emitted light is usually visible and can appear in bright colors. Fluorescent lighting, commonly used in homes and offices, utilizes this principle. Fluorescent lamps contain a gas that emits ultraviolet light when electrified. This light then excites a phosphor coating inside the lamp, producing visible light. Fluorescent lights are energy-efficient and have a longer lifespan compared to traditional incandescent bulbs.