![]() ![]() At such extreme temperatures, the occasional tungsten atom vibrates enough to detach from the atoms around it and flies into the air. The problem with this approach was the evaporation of the tungsten atoms. Since there wasn't any gaseous matter present (or hardly any), the material could not combust. In the first light bulbs, all the air was sucked out of the bulb to create a near vacuum - an area with no matter in it. The filament in a light bulb is housed in a sealed, oxygen-free chamber to prevent combustion.
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