Incandescent bulbs are a type of light bulb that produce light by heating a thin wire, called a filament, until it glows. This process occurs inside a glass bulb filled with gas, which helps to prevent the filament from burning out quickly. Incandescent bulbs are known for their warm, soft light and have been widely used in homes and businesses for many years. However, incandescent bulbs are not very energy-efficient compared to other lighting options, such as LED bulbs or compact fluorescent lamps (CFLs). They convert a lot of energy into heat rather than light, which can lead to higher electricity bills. As a result, many people are switching to more energy-efficient alternatives.