It’s hard to believe that the first blue LED didn’t arrive until 1993. They look simple, but looks are deceiving (Fig. 1). 1. Image showing a blue InGaN-based LED with gold wire contacts (0.4 × 0.4 mm ...
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At-Home LED Therapy Effective Against Acne
Both blue and red LED are effective, and work best when used together MONDAY, March 10, 2025 (HealthDay News) -- LED light ...
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