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2. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   As illustrated by a straight line on the chromaticity diagram, simple two-white blends will have a pink bias, becoming most severe in the middle. A small amount of green light, provided by another LED, could correct the problem. [38] Some products are RGBWW, i.e. RGBW with tunable white. [39] A final class of white LED with mixed light is dim ...

3. LED circuit - Wikipedia

   en.wikipedia.org/wiki/LED_circuit

   For example, a green LED is sensitive to blue light and some green light, but not to yellow or red light. This implementation of LEDs may be added to designs with only minor modifications in circuitry. [10] An LED can be multiplexed in such a circuit, such that it can be used for both light emission and sensing at different times. [10] [12]

4. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   A LED is a long-lived light source, but certain mechanisms can cause slow loss of efficiency of the device or sudden failure. The wavelength of the light emitted is a function of the band gap of the semiconductor material used; materials such as gallium arsenide , and others , with various trace doping elements , are used to produce different ...

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Xiaolüren - Wikipedia

   en.wikipedia.org/wiki/Xiaolüren

   There were red-light and green-light timers, but the latter was taken down due to accidents induced by encouraging drivers to speed up as the green-light timers ended. As for red-light timers, they cannot only inform the time remaining for waiting but also make the drivers focus on their signal instead of the green light in the other direction.

7. Child hospitalized after holiday drone show in Orlando goes ...

   www.aol.com/child-hospitalized-holiday-drone...

   Bystander video showed more than 200 drones forming a red and green holiday display when several of the bladded devices began falling from the sky, crashing on land and in the water.