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Both types of red-light masks are skin care devices built with LEDs (light-emitting diodes) that emit specific wavelengths of light, typically between 620 and 750 nanometers for red light and 760 to 1,400 nanometers for near-infrared light to stimulate cellular activity.—Brigitt Earley, Glamour, 11 Mar. 2025 The success of the light-emitting diode means curtains for the compact fluorescent light (CFL).—IEEE Spectrum, 30 Dec. 2011 That includes the light-emitting diodes, the circuit boards and the durable metal housing that protects the lights in news vans and on film sets.—Laura J. Nelson, Los Angeles Times, 26 Apr. 2025 After years of companies promising that their quantum dot light-emitting diode TVs use quantum dots (QDs) to boost color, some industry watchers and consumers have recently started questioning whether QLED TVs use QDs at all.—ArsTechnica, 31 Mar. 2025 See All Example Sentences for light-emitting diode
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