Why is filament lamp filled with inert gas?
Filament lamps, also known as incandescent bulbs, are filled with an inert gas, usually argon, to increase their efficiency and longevity. When a filament lamp is turned on, the filament heats up and begins to emit light. However, the filament also reacts with the surrounding oxygen, which can cause it to burn out more quickly.
By filling the lamp with an inert gas, such as argon, the filament is protected from the reactive oxygen in the air, which helps to increase its lifespan. The gas also helps to distribute heat more evenly within the lamp, which reduces stress on the filament and further increases its lifespan.
In addition to improving the lifespan of the filament, the inert gas also helps to reduce the amount of heat lost from the filament. This makes the lamp more efficient, as more of the energy is converted into light rather than wasted as heat.
Overall, filling filament lamps with inert gas is an important part of their design, as it helps to increase their efficiency and longevity.
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