Incandescent lights were the first type of lightbulb to be created. They are different from LED Lights. Read our post about LED Lights to learn more! Incandescent lights work with using the heat and light that is produced when electricity flows through things. Inside of incandescent lights, there is a small part called a filament. That filament is made out of materials that are flammable. Then, when the light is turned on, electricity flows through the filament. It doesn’t do anything at first, but in a few seconds, the filament starts burning due to the heat of the electricity. Then, it burns brighter until it can light up a whole room! That is how incandescent lights work. A downside to using incandescent lights is that they can burn out quickly. That is why most people now use LED Lights.