Incandescent light bulb 03/04/16
One of the most important inventions ever created in human history was the incandescent light bulb. The incandescent light bulb works works by passing an electric current through a filament and heating it until it reaches an extremely high temperature. Once this high temperature is reached, light will start radiating out of the light bulb due to spectrum emission. Incansdescent lightbulbs are highly inefficent, as they only use 2.2% of the energy passed in to them.