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Mar-19-2008, 20:27
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Quote:
Originally Posted by Opie Yutts
Yes, there's lots of proof for this, but I'm not going to run it through a search engine for you. I will try a to explain it a little better though. Atmosphere scatters blue light, so the more atmosphere the sunlight travels through, the less blue it looks. When the sun is rising or setting, notice how much more red the sky looks than when it is at high noon. When it is near the horizon, it is traveling through more atmosphere since it is coming at an angle instead of straight down (or perpendicular) through the atmosphere. In summer the sun is higher in the sky than in autumn.
Did that make any sense? It's a bit toasty in here.
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So I am correct!! it does'nt change color, merely it's position
changing the direction it hits the atmosphere which acts as a filter
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Mar-19-2008, 20:28
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as far as anything under the atmosphere is concerned....it changes color...
WT
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Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED
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Mar-19-2008, 20:32
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Quote:
Originally Posted by veggii
i have been pondering a tought since i got that email
3w blue Peak Wave Length (nm) : 465 ~ 470
3w red Peak Wave Length (nm) : 620~630
i had thought the lights emitted only one nm color
but by that and from the pro-light spec sheet
royal blue/ min 445nm/ typ 455nm/max 460/
i guessing then when you power up the led it starts
at the 445nm and goes to 460nm at peak power??
so when you pulse them you are in effect covering
wavelenghts from 445nm to 460nm with one led??
at a steady power you just get one wavelenght /typ 455nm/??
any thoughts on this?????
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When you order your LEDs you need to make sure of the BIN number. The actual wavelength can vary greatly on any individual model of diode depending on bin and manufacturer. Be careful. Not only that, a 450 nm (for example) emits in a spectrum from roughly 435 to 465, while 450 is only the dominant wavelength, steady power or not, as long as you have that bin number.
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 Everything I say in this forum is completely true, and should be construed as fact. I do smoke weed, and sometimes I eat it. Not only that I sell it, along with every other drug known to man and a few that aren't. Everything I do is 100% illegal, and I condone others breaking the law. All pictures that I post are not taken from the internet, but are of my own illegal operation. Also, I speed and don't come to complete stops at stop signs. |
Mar-19-2008, 20:37
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Quote:
Originally Posted by veggii
So I am correct!! it does'nt change color, merely it's position
changing the direction it hits the atmosphere which acts as a filter
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Of course the sun does not change colors. I never meant to say that, sorry for the confusion. Sunlight is a combination of all colors, all the time.
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Everything I say in this forum is completely true, and should be construed as fact. I do smoke weed, and sometimes I eat it. Not only that I sell it, along with every other drug known to man and a few that aren't. Everything I do is 100% illegal, and I condone others breaking the law. All pictures that I post are not taken from the internet, but are of my own illegal operation. Also, I speed and don't come to complete stops at stop signs.
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Mar-20-2008, 08:00
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Quote:
Originally Posted by Opie Yutts
When you order your LEDs you need to make sure of the BIN number. The actual wavelength can vary greatly on any individual model of diode depending on bin and manufacturer. Be careful. Not only that, a 450 nm (for example) emits in a spectrum from roughly 435 to 465, while 450 is only the dominant wavelength, steady power or not, as long as you have that bin number.
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thanx opie for shedding some light on this thought thats been
rollin in my head, it's still bouncing up there in my head i guess
cause i'm thinking if we can constantly vary the voltage going to
a bulb in effect constantly changing the wavelentgh we could
use alot less bulbs to cover more wavelenths instead of one bulb per wavelenthg. so it seems you are saying the bulbs don't work
that way, bummers maybe in the future! one day someone will finally copy the sun and put in a light bulb then everyone will
be able to grow indoors just as if it were outside! |
Mar-20-2008, 08:45
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Quote:
Originally Posted by veggii
one day someone will finally copy the sun and put in a light bulb
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It really has nothing to do with that. we've seen that the spectrums needed by cannabis are not a carbon copy of what makes it through the atmosphere from the sun.
some nm are only used to activate part of the plant to change some spectrums in to the more efficient 660nm range (info from physicsnole). so what if we dont have to activate that at all? if only the right nm are absorbed (in high enough photon counts) then thats less energy the plant has to divert toward changing spectrums. could this be the possible link to the higher potency claims by HT Mag and others? I dont know but I cant wait to find out 
db 
__________________
Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED
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Mar-20-2008, 17:47
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Hay opie here is the Cree spectral chart for the royal blue and red lights used in the procyon SNSstealth has. Can you put your magic to it so we can see the % of royal blue in the 440nm range and 470nm also the % red 640nm and 665nm. If you could, do it like you did the cannabis absorption chart. You took an already great chart and made it perfect. Thanks  |
Mar-20-2008, 18:11
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Quote:
Originally Posted by Dogznova
Hay opie here is the Cree spectral chart for the royal blue and red lights used in the procyon SNSstealth has. Can you put your magic to it so we can see the % of royal blue in the 440nm range and 470nm also the % red 640nm and 665nm. If you could, do it like you did the cannabis absorption chart. You took an already great chart and made it perfect. Thanks |
Hey im not Opie but looks like about 57% at 440nm, 24% at 470nm, 56% at 640nm and virtually 0% at 660nm. |
Mar-20-2008, 20:03
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Quote:
Originally Posted by physicsnole
Hey im not Opie but looks like about 57% at 440nm, 24% at 470nm, 56% at 640nm and virtually 0% at 660nm.
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But of course thats only a guess. Opie I cant find where you posted the other chart after you perfected the other one, think you could post it on here? |
Mar-20-2008, 20:39
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It's on page 7 of this tread
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Mar-20-2008, 20:43
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haha I was using it the whole time. i thought there was another one.  |
Mar-20-2008, 21:46
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Quote:
Originally Posted by Dogznova
It's on page 7 of this tread
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doh!
The perfect LED grow light
Last edited by veggii; Mar-20-2008 at 21:47.
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Mar-20-2008, 21:56
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ok so looking at the graph on page 7. i see were opie was talking about the deathzone for both A and B at apprx. 450nm
so i would have to conclude the procyon is'nt using
450nm blue as the ad states on this site:
Procyon 100 [Procyon 100] - $600.00 : Buy LED Grow Lights, Procyon 100
56 CREE* Xlamp high power LEDs (40 635nm, 16 450nm)
Home Grown lights states it ships with
Effective immediatley, all Procyon 100 lights will be shipping with 455nm dwl, approximately 446-
450nm peak wavelength blue LEDs.
know I'm confused
puff puff puff puff puff  |
Mar-20-2008, 22:08
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Im thinkin these are good wavelengths and ratios:
Vegetation Flowering
455-25%---455-10%
465-35%---465-10%
505-5%----530-5%
590-5%----590-5%
625-5%----625-5%
635-5%----635-10%
645-5%----645-15%
660-10%---660-35%
735-5%----735-5%
2:1 B:R---7:2 R:B
good bad???  |
Mar-20-2008, 22:10
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I have a huge ass post coming probably tomorrow. I thought I would have it done tonight but I got set back  . anyways the message spells out a review and an overview of LED growing and the LEDs im buying this weekend. |
Mar-20-2008, 23:10
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well looks like a very good place to start your experiment
did you think of the first 2 peaks 412/425 maybe a 420nm
or you decide that is not needed i was just looking over the charts
for the percentage i would go with the flower % you have setup??
looking forward too the summary to ketch everyone up too speed
are planning todo some build pic's and stuff |
Mar-20-2008, 23:34
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Quote:
Originally Posted by veggii
ok so looking at the graph on page 7. i see were opie was talking about the deathzone for both A and B at apprx. 450nm
so i would have to conclude the procyon is'nt using
450nm blue as the ad states on this site:
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so we have concluded that because it falls between two peaks thats a "death zone"? I see on the graph what your talking about and yes they are 450nm from the manufacturer. so do I believe charts and graphs or happy plants? sorry but 450 and 635 seem to be doing quite well for this and other plants as long as the intensity is high enough. 7 weeks no death zone. I realize we can and will do better once we have something like opie or physics or someone will create down the (short) road. of course a fuller spectrum will help, but seeing that drop in the graph at that exact spot seems to point out that, a) the LEDS do flux in nm's or b)the plants dont react as that chart says its supposed to or c)________________.
now im confused
db
__________________
Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED
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Mar-20-2008, 23:55
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Quote:
Originally Posted by SnSstealth
now im confused
db |
 me too  those are 450nm and their doin good so i think
if i smoke enough i might figure it out!! brb
Last edited by veggii; Mar-20-2008 at 23:56.
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Mar-21-2008, 00:21
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Quote:
Originally Posted by Paht_Hed
Just curious where you got that graph from Opie. While your graph shows peak photo at 465, mine shows 85% occurs at 465, my graph is the absorption spectrum of cannabis, not just anything, straight out of high times and a few others from different sources and all of them state 83-87%. I am going off the combined absorption of all 3 pigments which is more true to the actual light cannabis absorbs. Chlorophyll a and carotenoids overlap at 435-440nm therfore you need the amount of light for a and the amount of light for the carotenoids. So actually 435 produces more usable light.
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Paht could you post pics of your graph's so we could see | |
