Topic / Led - MashGet

Led

Led related content:

Led stories:

Stroud ruled out vs. Jaguars
Nov 20th, 2009 - ESPN
ORCHARD PARK, N.Y. -- Buffalo Bills starting defensive tackle Marcus Stroud has been ruled out because of a knee injury, meaning the NFL's worst run defense could be without both starting defensive tackles against Jacksonville this weekend.
Senate confirms long-stalled Obama judicial pick
Nov 20th, 2009 - Reuters
WASHINGTON (Reuters) - The Democratic-led U.S. Senate, having smashed through a Republican wall of opposition, confirmed on Thursday U.S. President Barack Obama's first and longest-stalled judicial nominee. On a vote of 59-39...
Judge: Army Corps' failure to maintain navigation channel led to massive flooding by Katrina
Nov 18th, 2009 - Los Angeles Times
NEW ORLEANS (AP) - A federal judge ruled Wednesday that the Army Corps of Engineers' failure to properly maintain a navigation channel led to massive flooding in Hurricane Katrina. U.S...
Youthful mistakes doom Kings in loss to Bulls
Nov 18th, 2009 - sacbee
There will be nights the young Kings will play like young Kings. They will look unsure of what to do on the floor and make mistakes. Tuesday night at Arco Arena was one of those nights.
Man 'had nightmare about burglar and woke to find he had strangled wife'
Nov 18th, 2009 - Telegraph
Brian Thomas, 59, who has two daughters, killed his wife Christine, 57, in his sleep while they were on holiday in their camper van. He “dreamed that an intruder had broken into their motor home”...

Led videos from YouTube:

5:29
MAKE presents: The LED
Take a tour through the world of the light-emitting diode and learn - who invented it, how to use it, and how to make your own. more Make presents: The Resistor www.youtube.com The Capacitor - www ...
2:45
Extreme Sheep LED Art
We took to the hills of Wales armed to the teeth with sheep, LEDs and a camera, to create a huge amazing LED display. Of sorts. For more info search for samsung LED TV or visit samsung.com/LED
4:37
Make a Pocket LED Cube
This week, Bre Pettis teams up with Mitch Altman and George Shammas to make a little 3x3x3 cube made of little LED lights that you can program with any kind of animation that you like! You ...
3:17
500 LED Extreme flashlight
Homemade 500 LED extreme flashlight. How it's made, and comparison with two maglites.

Led from WikiPedia:

A light-emitting diode (LED) (pronounced /??li??di?/, or just /l?d/), is an electronic light source. The first LED was built in the 1920s by Oleg Vladimirovich Losev, a radio technician who noticed that diodes used in radio receivers emitted light when current was passed through them. The LED was introduced as a practical electronic component in 1962.

All early devices emitted low-intensity red light, but modern LEDs are available across the visible, ultraviolet and infra red wavelengths, with very high brightness.

LEDs are based on the semiconductor diode. When the diode is forward biased (switched on), electrons are able to recombine with holes and energy is released in the form of light. This effect is called electroluminescence and the color of the light is determined by the energy gap of the semiconductor. The LED is usually small in area (less than 1 mm2) with integrated optical components to shape its radiation pattern and assist in reflection.