It looks like scientists in India have been able to make considerable steps towards developing a pure white LED. Up until now, our headlamps have only been able to pump out blue and yellowish colours.
The new LEDs are based on a new phosphor from semiconductor
nanocrystals of cadmium sulfide mixed with manganese. It produces a stable
shade of white light that remains constant over time and appears superior in
overall performance in comparison to previous generations of white LEDs.
The practical uses to achieving a white light would be for household
and office lighting systems. And yes, your headlamp so you can blind your friends
while standing around talking at night...
LED Primer: merg.org.uk
More info: physorg.com
New White Light LEDs DevelopedWednesday, 26 September 2007
David Johnston has been introducing people to the sport of sea kayaking for the past 15 years. He is a senior instructor trainer with Paddle Canada and teaches for several paddling schools in Ontario, Canada. Full Bio.