LED's Bring A new era in lighting

High-power LED's have the potential to replace filament bulbs and even fluorescent tubes. Today, these are available in various colours, offering superior ruggedness with extended life. So get ready for a new era of lighting

• inside an led
• led emission and colour determination
• how much energy does an led emit?
• Frequency and wavelength of light
• Types of leds
• characteristics

pls visit
http://www.electronicsforu.com/EFYLinux/efyhome/cover/September2008/LED-Lighting_1-Sept08.pdf