If light fixtures are powered through electricity, why do light bulbs need to be replaced?
In: Engineering
It’s basically so companies who make light bulbs can make more money. Companies are capable of making them last much much longer, but then you wouldn’t be buying light bulbs as much.
Light bulbs give off light by pushing electricity through a thin tungsten filament. The filament heats up and produces light. Over time, the filament wears out and becomes brittle, until it breaks and the bulb dies.
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