On 7 Apr, 00:18, firstname.lastname@example.org wrote:
You mean YOU are trying to sell them !
As I comment on sci.engr.lighting, they're OK for lettuce - (maybe) :-
(the only commercial application I have been able to find and I wonder
if they paid full price for those LEDs ? ;) )
HIDs .. so even for (expensive) lettuce, their only selling point
(outside of a laboratory) is lumen maintenance / longevity.... but the
payback time surely has to be a decade or so ...
I reckon fluorescents are the best solution for domestic salad
On 6 Apr 2007 10:26:47 -0700, email@example.com wrote:
Most of them are used for ambient or atmosphere lighting, not lighting
a pathway. If they are hard wired, they may be much brighter than the
solar LED units they sell.
If you want to try them, buy them from www.qvc.com and for thirty days
if you don't like them you get a no questions asked full refund, less
shipping the items back.
they are cheap to run per lumen
they dont burn out for thousands of hours (10,000)
they typically emit only a limited spectrum so it is really important to make
the spectrum is blue with a bit of red and the intensity is enough for growing
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