electric light bulb

An electric light bulb is a device that produces light by converting electrical energy into visible light. It consists of a glass enclosure (bulb), a filament (usually tungsten), and connecting wires. When electricity flows through the filament, it heats up and glows, emitting light. The bulb's glass prevents oxygen from reaching the filament, allowing it to operate at high temperatures without burning out quickly. Variations include incandescent bulbs, LED bulbs, and fluorescent bulbs, each using different methods to generate light efficiently. The invention revolutionized lighting by providing a reliable, safe, and consistent source of illumination.