OT: white LEDs

[Curt @ Atari Museum]

Nice!!!       Definitely should see those nationwide, its ashame they 
cost so much which I mean - they are LED's, they are a couple of cents 
each, its this all profit gouging on Green Products???



Curt



Chuck Guzis wrote:
> On 22 Feb 2010 at 23:01, Jochen Kunz wrote:
>
>   
>> Well. I meant LED in general, white in special, in contrast to e.g.
>> CFL, HID, sulfur, ... Also take in account that the human eye has a
>> fairly low sensitivity for red light. Lumens are weightend by the
>> spectral sesitivity of the human eye. -
>>     
>
> LED street lights are beginning to appear on some California streets. 
> As I understand it, there is less light output in absolute terms, but 
> the overall effect is one of providing more useful illumination than 
> the traditional high-pressure sodium lamps.  See:
>
> http://cbs5.com/video/?id=48013@kpix.dayport.com
>
> for a video report.
>
> At amazon.com, you can even purchase a 100 watt LED luminaire for 
> US$720.
>
> http://www.amazon.com/Energy-Saving-Street-Meters-
> Illuminated/dp/B000QY0L54
>
> In my lifetime, I've seen street lighting move from incandescent to 
> mercury vapor (horrible light quality) to low-pressure sodium 
> (yellow) to high-pressure sodium.   LEDs look like a winner and may 
> well reduce some of the night-sky "light pollution".
>
> --Chuck
>
>
>