How Light Emitting Diodes Work

How Light Emitting Diodes Work

Inside this Article

Introduction to How Light Emitting Diodes Work
What is a Diode?
How Can a Diode Produce Light?
LED Advantages
Lots More Information
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Light emitting diodes, commonly called LEDs, are real unsung heroes in the electronics world. They do dozens of different jobs and are found in all kinds of devices. Among other things, they form the numbers on digital clocks, transmit information from remote controls, light up watches and tell you when your appliances are turned on. Collected together, they can form images on a jumbo television screen or illuminate a traffic light.

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WORLD’S 50 SAFEST BANKS 2010

Global Finance names the World's 50 Safest Banks 2010

NEW YORK, September 2, 2010 – With bank stability still high on corporate and investor agendas, Global Finance publishes its 19th annual list of the world’s safest banks. The sovereign debt crisis in Europe and renewed concerns about the global economic outlook are once again putting the spotlight on bank safety. It should be somewhat reassuring that 45 of the top-50 safest banks is this year’s listing maintained their standing among the top echelon in this year’s ranking. Banks that cleaned up their balance sheets and strengthened their capital positions were the biggest gainers. In many instances, non-performing loans have been reduced significantly. Several major British banks have rejoined the top 50, although many of the big name banks that lost their safest bank ranking during the credit crunch are still absent from the list.

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BEST PLACES TO LIVE (CNN Money)

BEST PLACES TO LIVE Money's list of America's best small cities

01 Eden Prairie, MN
02 Columbia/Ellicott City, MD
03 Newton, MA
04 Bellevue, WA
05 McKinney, TX
06 Fort Collins, CO
07 Overland Park, KS
08 Fishers, IN
09 Ames, IA
10 Rogers, AR
11 Plymouth, MN
12 Highlands Ranch, CO
13 Woodbury, MN
14 Carmel, IN
15 Eagan, MN
16 Allen, TX
17 Shawnee, KS
18 South Jordan, UT
19 Broomfield, CO
20 Apple Valley, MN
21 Missouri City, TX
22 Irvine, CA
23 Cary, NC
24 Rowlett, TX
25 Gaithersburg, MD

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U.S. Has `Realistic Possibility' of Stagnation, S&P's Wyss Says

U.S. Has `Realistic Possibility' of Stagnation, S&P's Wyss Says

The U.S. has a “realistic possibility” of falling into a Japanese-style economic slump, said David Wyss, chief economist at Standard & Poor’s. ...

Ken Langone: US Economy Like a 'Drunk That Keeps Drinking': Langone - CNBC

Ken Langone: US Economy Like a 'Drunk That Keeps Drinking': Langone - CNBC

By: CNBC.com

The struggling U.S. economy, held up by "artificial" stimulus, is not unlike a "drunk that keeps drinking," Ken Langone, former director of the New York Stock Exchange and co-founder of Fieldpoint Private Bank and Trust told CNBC Tuesday. ...

U.S. Existing Home Sales in Record Plunge

U.S. Existing Home Sales in Record Plunge

Sales of existing houses plunged by a record 27 percent in July as the effects of a government tax credit waned, showing a lack of jobs threatens to undermine the U.S. economic recovery. ...

Global economy going nowhere fast

Global economy going nowhere fast

NEW YORK (CNNMoney.com) -- So much for merger mania getting investors excited.

Stocks were off to a brutal start Tuesday, following a lackluster Monday. Even though the pace of corporate takeovers is picking up, investors just aren't buying the notion that more mergers could lead to higher stock prices. ...

The Return of Greek Tragedy - CNBC

The Return of Greek Tragedy - CNBC

By: Reported by David Faber, written by Gennine Kelly

Economist Joseph Stiglitz is warning that Europe is at risk of going into a double-dip.

According to Bloomberg, the Noble Prize winner told Dublin-based RTE Radio on Tuesday that when the Euro-area governments stepped up efforts to cut deficits to below the European Union limit of 3 percent of gross domestic product, so many in Europe focused on this "3 percent artificial number, which has no reality and is just looking at one side of a balance sheet," Stiglitz said. ...

CNBC Stock Market News — Why Markets Will Avoid Double-Dip: Chief Strategist - CNBC

CNBC Stock Market News — Why Markets Will Avoid Double-Dip: Chief Strategist - CNBC

By: JeeYeon Park

With stocks lower for the fourth trading session, are we headed for a double-dip? David Kelly, chief market strategist at JPMorgan Funds, and Sandy Lincoln, investment strategist at M&I Investment Management, shared their insights. ...

Gross Says Mortgage Yields Would Soar Without Government Aid

Gross Says Mortgage Yields Would Soar Without Government Aid

Bill Gross, who runs the world’s biggest mutual fund at Pacific Investment Management Co., said mortgage yields in the U.S. could rise as much as 4 percentage points without government support. ...