A light bulb, represented by the symbol "💡", is an electrical device that produces light when an electric current passes through it. It consists of a filament or LED (Light Emitting Diode) enclosed in a glass or plastic bulb, which protects the filament or LED and controls the direction of the emitted light. Light bulbs are commonly used for illumination in homes, offices, and various other settings, providing a convenient and efficient source of artificial light. The symbol "💡" represents the concept of a light bulb and is often used to indicate the presence of an idea or inspiration.