STEM与日常科技·英语30篇（9）

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LED灯泡如何节省75%的电能

LED bulbs convert over 90% of electricity into light, while incandescent bulbs waste most as heat.
They last 25 times longer than traditional bulbs, reducing replacement frequency and waste.
A 10-watt LED produces as much light as a 60-watt incandescent bulb.
Drivers inside the bulb regulate current to prevent overheating and ensure steady brightness.
Unlike fluorescents, LEDs contain no mercury and turn on instantly at full power.
Their small size allows creative lighting designs in furniture, mirrors, and even clothing.
Smart LEDs can change color temperature to match natural daylight cycles for better sleep.
Widespread adoption has helped some cities cut streetlight energy use by nearly half.