On Oct 22, 2005, at 8:56 AM, enki@cpovo.net wrote:

>
> ------- Forwarded message follows -------
> Accidental Invention Points to End of Light Bulbs Bjorn Carey
> LiveScience Staff Writer
>

> The new device gives off a warm, yellowish-white light that shines
> twice as bright and lasts 50 times longer than the standard 60 watt
> light bulb.
> Bowers and another student got the idea to stir the dots into
> polyurethane and coat a blue LED light bulb with the mix. The lumpy
> bulb wasn't pretty, but it produced white light similar to a regular
> light bulb.
>
> LEDs produce twice as much light as a regular 60 watt bulb and burn
> for over 50,000 hours.

I think perhaps they fail to understand the difference between
amount of light and amount of light per watt.  There are no 60W
LEDs that I know of, nor any LED lights whose total output exceeds
that of a 60W lamp.  They're surely not getting 120W incandescent
equivalent light out of a standard blue LED, no matter how well
their quantum dots work as a phosphor (which sounds like what
they're describing...)

The vanderbilt article seems more accurate:

http://exploration.vanderbilt.edu/news/news_quantumdot_led.htm

BillW
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