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Using Tungsten to Ignite Gas? Answered

Alright, so Tungsten (which you may or may not know, is my favorite element) is combustible when current passes through it while it is exposed to oxygen. Could I place a bit of tungsten I scavenged from a lightbulb in a small pool of gas (or alcohol) while running 9 volts through, and get a reaction? Would having the whole bit of tungsten under the gas work, or would I need a piece above the gas also? I'm not looking to blow things up, just trying to do a bit more "dangerous experiments" before school starts. Thanks all!

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gyromild
gyromild

13 years ago

In the Vietnam war, the Viet Cong used flashlight bulbs, sandpaper the glass part till it gets really thin, it'll pop when current pass through it. They used it as detonators in booby traps and other explosive devices. A little something to experiment with.

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NachoMahma
NachoMahma

13 years ago

. Let us know how this turns out. Burnt out light bulbs may be a cheap source of ignitors.

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Bran
Bran

Reply 13 years ago

That was my plan, and guess what? A bulb just blew out. Lucky me.....

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CameronSS
CameronSS

13 years ago

Most metals are combustible with enough oxygen, not just tungsten. Combustion is basically just rapid oxidization when it comes to metals. You let a piece of iron sit outside and it oxidizes by rusting. You put it an an oxygen-rich environment and heat it, and it burns.

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lemonie
lemonie

13 years ago

You're talking about getting metal hot enough to ignite flammable vapour? You could do this quite easily, but might need more than 9V (e.g. mains, if it is a mains-fillament) You would need the hot metal above the liquid, in a gas + air mixture. Otherwise you'd just boil the gasoline. L

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NachoMahma
NachoMahma

13 years ago

. I don't think 9V would get a 120V filament hot enough. Try it, sans flammables, and see what happens.
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> Would having the whole bit of tungsten under the gas work
. Not sure, but probably not - no Oxygen (unless there was enough air trapped in the filament coils).