收藏: 钨灯
钨丝灯，又称白炽灯泡，是一种利用电流将灯丝加热至高温产生光线的电光源。灯丝通常由钨制成，被密封在玻璃灯泡内。该灯泡内部要么抽成真空，要么充入惰性气体，以防止灯丝氧化。
钨丝灯以温暖的色温和出色的显色性著称，但其能效极低——绝大部分能量转化为热能而非光能。
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