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Light Emitting Diodes
LED Lights - How it Works - History
Light-Emitting Diodes (LEDs) - SparkFun Learn
What is LED? - Definition, Working, Properties, Uses, Advantages
A Light Emitting Diode (LED) Is A Two Lead Semiconductor Light Source. Electrons Are Able To Recombine With Electron Holes Within The Device, Releasing Energy In The Form Of Photons. Royalty Free
Light-emitting diode physics - Wikipedia
LED - Wikimedia Commons
Light emitting diodes - LEDs | How they work and their limited use in optical networking - Fiberguide
Introduction to LED (Light Emitting Diode) - The Engineering Projects
How do LEDs product light? How do LEDs work? What is an LED?