polyarcturus
Well-Known Member
super long but once again well written.
super long but once again well written.
Notice the red color shift of the sunlight later in the afternoon as the sun is lower in the sky. This is due to the sunlight having to travel through more of the Earth's atmosphere.
The Midday Sunlight does not have to travel through as much atmosphere thus creating more of a blue shifted spectrum.
I really like the afternoon sun spectrum. All of my outdoor plants on the Southern side of my house are almost 5 times larger than the plants on the Eastern side of my house. Now I know why. The plants on the Southern side of my house get all of the late afternoon sunlight. Even though they get less light overall, the spectrum is ideal.
The 10K lamp I use is a regular mogul lamp. So the element part of it is within another layer of glass. Then, I have the mogul lamp inside of a sunsystem reflector which has it's own layer of 1/8" thick glass. Plenty of UVb light still gets through all of the glass anyway.was the 10k mh bare bulb or behind glass?
what wattage? the goal is to cover a large area with a small watt bulb, personally thats a good bump but id like to see 2x that.
wonder what an reptile MVB (bare bulb) would put out on your machine? the 160w covers a 2x4 area pretty well
r
ahhh damn im looking fot the 280 peaks
between 275 and 350 is al the magic. ive been looking into a UVB meter but its out of my range right now since i will net the whole set (UVC UVB UVA meters) to find safe source of UVB, i did not realize it did not go that low.
It's all good. I am mainly studying the visible light spectrum and how it influences plant growth.
You can get a spectrometer that only does the UV light spectrum. They go all the way from 200nm up to 420nm. I think they are still around $2000 though.
Well, you did see that the sun spectrum drops off beyond 400nm right? I highly doubt there are any major spikes beyond 400nm. The atmosphere blocks them all pretty well.