Light dimmers are devices that allow you to adjust the brightness of electric lights. They work by controlling the amount of electricity that flows to the light bulb, enabling you to create the desired ambiance in a room. Dimmers can be used with various types of bulbs, including incandescent, LED, and CFL lights, making them versatile for different lighting needs. There are several types of light dimmers, including rotary, slide, and smart dimmers. Rotary dimmers have a knob that you turn to adjust brightness, while slide dimmers have a lever that you move up or down. Smart dimmers can be controlled via a smartphone app or voice commands, offering convenience and advanced features for modern homes.