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LED Definition & Meaning - Merriam-Webster
The correct past and past participle of lead is spelled led. If you aren’t sure whether to use led or lead as the verb in your sentence, try reading it aloud to yourself.
Light-emitting diode - Wikipedia
A light-emitting diode (LED) is an electronic component that uses a semiconductor to emit light when current flows through it. Electrons in the semiconductor recombine with electron holes, thereby releasing energy in the form of photons.
LED | Definition, Light, & Facts | Britannica
An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.
LED lamp - Wikipedia
LED lamps require an electronic LED circuit to operate from mains power lines, and losses from this circuit means that the efficiency of the lamp is lower than the efficiency of the LED chips it uses.
Learn About LED Lighting - ENERGY STAR
When designed well, LED lighting is more efficient, versatile, and lasts longer. LEDs are “directional” light sources, which means they emit light in a specific direction, unlike incandescent and CFL, which emit light and heat in all directions.
Light Emitting Diode (LED): What is it & How Does it Work?
What is a Light Emitting Diode (LED)? A Light Emitting Diode (LED) is a special type of PN junction diode. The light emitting diode is specially doped and made of a special type of semiconductor. This diode can emit light when it is in the forward biased state.
Light-emitting diode - Simple English Wikipedia, the free encyclopedia
A light-emitting diode (LED) is a semiconductor device that produces light from electricity. LEDs last a long time and do not break easily (compared to incandescent lightbulbs).
How Light Emitting Diodes Work | HowStuffWorks
Several companies have begun selling LED light bulbs designed to compete with incandescent and compact fluorescents that promise to deliver long lives of bright light and amazing energy efficiency.
What Is an LED? - How-To Geek
Believe it or not, LEDs were first invented in 1927 by Oleg Losev in Russia, but a practical commercial LED wasn't developed until the 1960s. That's when James R. Biard and Gary Pittman created a GaAs-based LED while working at Texas Instruments.
LED (Light Emitting Diode) | Light Bulb Types | Bulbs.com
LED light bulbs or lamps utilize light-emitting diodes in order to produce light. LED is a “solid-state” technology, which means that the materials used to generate the light are encased within a solid material.
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