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University of Toronto grads produce "most efficient" light bulb in the world.
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How Light Emitting Diodes Work | HowStuffWorks
Light emitting diodes, commonly called LEDs, are real unsung heroes in the electronics world. They do many different jobs in all kinds of devices. They form numbers on digital clocks, transmit information from remote controls, light up watches and tell you when your appliances are turned on.
Light Emitting Diode <What are LEDs and How Do They Work ... - Rohm
What are LEDs? LEDs are a type of semiconductor called "Light Emitting Diode". White LEDs, which have achieved practical realization through the use of high-brightness blue LEDs developed in 1993 based on Gallium Nitride, are attracting increased attention as a 4th type of light source. How do LEDs Emit Light?
Led Definition & Meaning - Merriam-Webster
noun. ˌel- (ˌ)ē-ˈdē. plural LEDs. : a semiconductor diode that emits light when a voltage is applied to it and that is used especially in electronic devices (as for an indicator light) Did you know? When to Use Lead or Led. There is some persistent confusion about lead and led. Or, we should say, there is confusion about the leads and led.
LED | Definition, Lights, Types, & Facts | Britannica
LED, in electronics, a semiconductor device that emits infrared or visible light when charged with an electric current. Visible LEDs are used in many electronic devices as indicator lamps, in automobiles as rear-window and brake lights, and on billboards and signs as alphanumeric displays or even.
Light-emitting diode - Wikipedia
A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.
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