pls... explain why
2006-09-09 15:41:16 · 7 answers · asked by miaka y 2 in Science & Mathematics ➔ Physics
tung·sten (tŭng'stən) pronunciation
n. (Symbol W)
A hard, brittle, corrosion-resistant, gray to white metallic element extracted from wolframite, scheelite, and other minerals, having the highest melting point and lowest vapor pressure of any metal. Tungsten and its alloys are used in high-temperature structural materials; in electrical elements, notably lamp filaments; and in instruments requiring thermally compatible glass-to-metal seals. Atomic number 74; atomic weight 183.84; melting point 3,410°C; boiling point 5,900°C; specific gravity 19.3 (20°C); valence 2, 3, 4, 5, 6. Also called wolfram.
2006-09-09 16:02:44 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Light bulbs burn out when the expansion and contraction of the filament (as the light is turned on and off) degrades it until it breaks. tungsten is better at holding up to this stress than most metallic materials, this is also why tungsten is used to harden steel,
2006-09-09 15:48:13 · answer #2 · answered by Sleeping Troll 5 · 0⤊ 0⤋
Because it has an extremely high melting point and holds up well to being repeatedly heated and cooled.
2006-09-09 15:45:36 · answer #3 · answered by Schrecken 3 · 1⤊ 0⤋
Becuse it can withstand the rapid heating and cooling better than any other substance that is low priced.
2006-09-09 15:47:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i believe it has the highest melting point of any metal
2006-09-09 16:44:33 · answer #5 · answered by scoot 2 · 0⤊ 0⤋
Strength. It would collapse.
2006-09-09 15:45:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋
handles heat and stay together--longer -then other materials
2006-09-09 16:14:39 · answer #7 · answered by Anonymous · 0⤊ 0⤋