How the life of the filament of an electric bulb is prolonged 0?
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An ordinary light bulb contains an inert gas (such as argon or krypton) and nitrogen, which keep the tungsten filament from oxidizing (i.e. burning up). ... The compound then floats around inside the bulb until it hits the hot filament, whereupon the high temperature breaks it down into iodine vapour and metallic tungsten.
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