View Single Post
Old 05-07-2005, 09:34 AM   #32
sientbob
Grand Master Gardener
 
sientbob's Avatar
 
Join Date: Feb 2003
Location: mason dixon line 36'N
Posts: 3,211
Thanks: 0
Thanked 41 Times in 36 Posts
sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.sientbob has a master's degree in THC Management.

Quote:
Back to the frustration.
Couldn't have said it better myself.

Quote:
I noted a loss of about 6,000 lumens as compared to a standard MH bulb, and I set out to find an SPD chart. I've been searching for a SPD chart on a 10,000k MH for hours now (any brand of MH)....Nothing.



Here are three different 10,000 Kelvin metal halide bulb spectral power distribution charts.(sorry the multiple one is kinda hard to read) As you can see all three have very different spectral distributions! These bulbs do have good output in the blue region, but they also have a major output in the green region(which is what gives them the higher Kelvin rating and color rendering index).

Hope that helps.
Attached Thumbnails
spectral-distributions-various-bulbs-figure1.jpg   spectral-distributions-various-bulbs-f1fig1.jpg  
sientbob is offline