Incandescents are a type of light bulb that produce light by heating a metal filament, usually made of tungsten, until it glows. When electricity passes through the filament, it gets hot and emits a warm, yellowish light. These bulbs have been popular for many years because they create a cozy atmosphere in homes and are easy to use. However, incandescents are not very energy-efficient compared to newer options like LEDs or 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 efficient lighting solutions that save energy and last longer.