how do christmas tree lights work

Christmas tree lights are a classic holiday decoration that add a festive touch to any home. They work by utilizing tiny light bulbs that emit light when electricity is passed through them. The electricity is supplied by a power source, such as a wall socket or battery pack. Each light bulb has its own individual filament, which heats up when electricity is passed through it. The heat causes the filament to glow, producing the light that you see. In some cases, the lights are connected to a switch, allowing you to turn them on and off at will.