https://www.youtube.com/watch?v=LFkrBtQOOH4 LED(Light Emitting Diode) A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons (Energy packets) Other Info.. LEDs emit light in a specific direction, reducing the need for reflectors and diffusers that