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Light-emitting diode - Wikipedia
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Invention of blue LEDs wins physics Nobel - BBC News
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Blue LED Light Bulb A19 3 Watt E26 Base Clear Glass Lights Up Blue — Modvera Lighting
Best smart light bulbs 2023: Reviewed and rated | TechHive
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LED lamp - Wikipedia
Blue Light is Less Disruptive to Sleep than Previously Thought | Sci.News
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