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LED
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Light-emitting diodes have largely replaced older lighting technologies, such as incandescent bulbs A classic LED digital clock
Know how halogen and fluorescent bulbs, as well as sodium, mercury, and metal-halide vapour lamps, and LEDs work
Learn how different types of electric light works - incandescent, halogen, fluorescent, and LED
For Students
light-emitting diode summary
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Rural Irish landscape, Sligo, Ireland.
Why Is Ireland Two Countries?
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes
Illustration for Demystified "How Dangerous is Quicksand"
How Deadly Is Quicksand?
Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.
6 Wars of Independence
Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd
Causes of the Great Depression
Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks
Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)
Cruel and Unusual Punishments: 15 Types of Torture

LED: Facts & Related Content

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News •

Researchers develop 90-nanometer LEDs for future ultra high-resolution displays • Mar. 30, 2025, 11:03 PM ET (TechSpot)

Facts

Also Known As light-emitting diode • light-emissive diode

Photos and Videos

Light-emitting diodes have largely replaced older lighting technologies, such as incandescent bulbs
A classic LED digital clock
Know how halogen and fluorescent bulbs, as well as sodium, mercury, and metal-halide vapour lamps, and LEDs work
Learn how different types of electric light works - incandescent, halogen, fluorescent, and LED
See All Videos and Images →

Related Topics and References

Topics

Key People

John J. Hopfield
John J. Hopfield
American physicist
Nakamura, Shuji
Shuji Nakamura
American materials scientist
Nick Holonyak, Jr.
American engineer
Akasaki Isamu
Akasaki Isamu
Japanese materials scientist
Amano Hiroshi
Amano Hiroshi
Japanese materials scientist