1) Car headlight component 2) Incandescent source of light 
• An electric glow lamp having filaments of metallic tungsten. Such lamps, owing to the refractory nature of the metal, may be maintained at a very high temperature and require an expenditure of only about 1.25 watts per candle power.
A tungsten lamp is an incandescent electric lamp in which the filament consists of tungsten. Usually a pure tungsten filament is used, but formerly a carbon core coated with tungsten was also used. Tungsten took over from carbon filaments veacsue tungsten has advantages over carbon filaments in giving more light for lower power consumption, being l...
an incandescent electric lamp in which the filament is made of tungsten.