A closeup of an electric bulb which generates light and blinks. Incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light. The filament, heated by passing an electric current through it, is protected from oxidation with a glass or fused quartz bulb that is filled with inert gas or evacuated. Thomas Edison is thought to be the inventor of the electric bulb. Get this unique lightbulb wallpaper with a retro 'feel' for your Android smartphone now!