Incandescent lamp: A general term for electric lamp which consists essentially of a glass or quartz bulb, filled with an inert gas, in which a filament, commonly of tungsten, gives off light when it is heated to incandescence by an electric current.

• 白炽灯:电灯的通称；它有着玻璃或石英圆壳，充满惰性气体，其中的金属丝常用的是钨丝通过电流加热至白炽而发出光量。