Tungsten lamps are also known as incandescent lamps, Edison bulbs, or filament bulbs. These lamps use a tungsten filament that heats up when electricity passes through it, producing light. Halogen lamps are also considered as a type of tungsten lamp, as they use the same filament technology but with the addition of halogen gas to improve the lifespan and efficiency of the bulb. Other synonyms for tungsten lamps include filament lamps, carbon lamps, and vacuum lamps. Despite being one of the oldest forms of lighting technology, tungsten lamps are still commonly used in homes and businesses today due to their warm and familiar glow.