An incandescent lamp is a type of electric light that produces light by heating a metal filament, usually made of tungsten, until it glows. When electricity passes through the filament, it heats up and emits visible light. These lamps are known for their warm light and are commonly used in homes and businesses. Despite their popularity, incandescent lamps are less energy-efficient compared to other lighting options, such as LED or fluorescent lamps. They convert a significant amount of energy into heat rather than light, leading to higher electricity consumption. As a result, many countries are phasing out incandescent bulbs in favor of more efficient alternatives.