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Re: [APD] Lighting



well i assumed since you could run an led flashlight for a lot longer on 
the same batteries just for one example and get quite bright lighting 
they were more efficient... of course again i'm not talking about for 
plants... i dont think we are there yet.
am i wrong in this, it seemed common sense to me

S. Hieber wrote:

>Actually, no, LEDs are not. The really bright ones are a
>bit less energy efficient than good fluorescents and
>actually depend on fluoresence to emit light.
>
>The highest energy efficency of lighting lamps belongs to
>certain of the mercury-vapor gas lamps. Not the MH ones
>that one might use on an aquarium but ones with output in a
>very narrow band of the spectrum. They are suitable for
>special purposes and some have energy efficiency over 80%.
>The ones suitable for aquaria have about the same energy
>efficiency as fluorescents, roughly 35%.
>
>sh
>
>--- urville <urville at peoplepc_com> wrote:
>
>  
>
>>i believe LED's are the most effeicient lighitng
>>as to how available they are in anything that does us
>>anygood i dont know
>>
>>Jerry Baker wrote:
>>
>>    
>>
>>>They don't even cost more hardly anymore. I see 4-packs
>>>      
>>>
>>for $8 all the 
>>    
>>
>>>time in Home Depot.
>>>
>>> 
>>>
>>>      
>>>
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>>
>>    
>>
>
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>  
>
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