Asked in Light Bulbs and Artificial Lighting
Light Bulbs and Artificial Lighting
How do the makers of light bulbs prevent filaments from burning out?
Answer

Wiki User
January 16, 2008 6:34PM
When the glass is sealed on the light in the build process the light is filled with an 'innert' gas. That means that the gas will not sustain fire or ignition.
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If you build a circuit how can you make the bulbs brighter?

-- Without changing the bulbs, increase the voltage of the
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Asked in Home Electricity, Argon, Light Bulbs and Artificial Lighting
Why are argon and nitrogen used in light bulbs?

Early lightbulbs contained vacuum to prevent oxygen from burning
up the filament. But as higher wattage bulbs were introduced to
make brighter light, another problem occurred: the lightbulb could
not properly dissipate the extra heat.
The problem was as follows: the only way heat could pass from
the hot filament to the glass bulb was by radiation. While
this was sufficient to move the heat in lower wattage bulbs it was
inadequate in higher wattage bulbs, causing filaments to overheat
and burnout early.
The problem was solved by filling the bulb with an inert gas
(e.g. argon, krypton, nitrogen) to prevent oxygen from burning up
the filament, but also the inert gas could pass heat from the hot
filament to the glass bulb by convection. Convection can
move far more heat much faster than radiation can, thus allowing
the higher wattage bulbs to properly dissipate all the heat they
generate.