light wavelength and lumens
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  #1  
Old 02-08-2009, 12:06 PM
JPB JPB is offline
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Join Date: Jan 2009
Zone: 8a
Location: The Netherlands
Age: 66
Posts: 6
light wavelength and lumens Male
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I would say that it is hard to compare.

First, lumen is based on the human eye which has a much stronger perception in the green than in the red and blue.

Second, plants do mainly absorb radiation in the blue and red wavelengths and no/less in the green/yellow bands.

So comparing lumens from these lamps is not useful IMO.
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bulb, close, light, lumens, sunlight, wavelength

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