科学素养与生活应用·英语30篇（1）
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Why LED Bulbs Last Longer—and Use Less Power—Than Incandescent Ones
为何LED灯泡比白炽灯更耐用且耗电更少
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LEDs produce light by moving electrons through semiconductor materials—not by heating a filament.LED通过让电子穿过半导体材料发光，而非加热灯丝。
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Over 90% of energy in incandescent bulbs becomes wasted heat, while LEDs convert most to visible light.白炽灯超过90%的能量以废热形式浪费，而LED则将大部分能量转化为可见光。
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Their solid-state design lacks fragile parts, so vibrations or frequent switching rarely cause failure.其固态设计无易损部件，因此振动或频繁开关极少导致故障。
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Thermal management matters: built-in heat sinks prevent overheating that shortens LED lifespan.散热管理至关重要：内置散热器可防止过热，延长LED寿命。
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Smart LEDs can dim smoothly, change color, and sync with home automation systems easily.智能LED可平滑调光、变色，并轻松与家庭自动化系统同步。
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Manufacturers use phosphor coatings to convert blue LED light into warm white tones people prefer.制造商采用荧光粉涂层，将蓝色LED光转换为人眼偏爱的暖白光。
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Life ratings of 25,000 hours mean an LED bulb may last over 20 years with typical use.25,000小时的寿命意味着LED灯泡在常规使用下可持续工作逾20年。
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This shift reflects progress across physics, materials science, and sustainable product engineering.这一转变体现了物理学、材料科学及可持续产品工程的进步。