Tungsten is use in lamp filament.
Standard State: solid at 298 K
Color: Grayish white lustrous
In 1779 Peter Woulfe examined the mineral now known as wolframite and
concluded it must contain a new substance. Scheele, in 1781, found that a new acid
could be made from tungsten. Scheele and Berman suggested the possibility of
obtaining a new metal by reducing this acid.
Tungsten has the highest melting point and lowest vapor pressure of all metals, and at
temperatures over 1650°C has the highest tensile strength.
Tungsten and its alloys are used extensively for filaments for electric lamp, electron
and television tubes, and for metal evaporation work; for electrical contact points for