Quote Originally Posted by oldmac
Thanks 'shake,
I'm real happy how the little guy is turning out!

Yo Dutch',
Now that's what I like to see, a family that has gone green!

Wish I'd said dat.:thumbsup:

OT:
I've been doing alot of thinking and reseaching about this last experiment. I really want a good light spectrum analyzer for Chistmas, it would make my life much easier.
I now understand why so many scientific light grow experiments (done by real scientists) used/use filters to get or limit light spectrums.

From what I can find, Pyrex tends to absorb light from 10nm to abt 425nm, which covers all three UV bands plus most violet. So chambers 2 & 3 having a 6500k CFL inside the pyrex cool tube surely saw blue light for thier entire vegative stage and chamber 2 (the control w/no UVb) saw blue thru-out it's grow. The fact that I was able to control plant stretch (w/o far red) even tho the light was primarily HPS, I attribute to the additional blue from the CFLs. I have not been able to find or obtain a spectrum graph for the "Zilla desert 50 UVb" bulbs, but the desert 50 refers to the fact that the bulbs will deliver 50 micro watts per second/cm2 of UVb.

So I thinks, no conclude, that the results show UVb effects and not effects of blue light.

Now, that makes me go hmmmm.
50 microwatts per second, per square centimeter?!
And it was how far from the plants?

Granted that UV is high energy radiation but, that still sounds feeble!

Hey KNNA, can you translate this for us?

Dunno how to quantify it properly, or even understand the numbers given, but I'd like to lay your li'l Zilla on an EPROM and see how long it takes it to "lose it's mind".
That would give me some idea of it's actual energy.

My 4' quartz tube can erase 50 EPROMs at a time, from a height of 3" in under 10 minutes.
Sunlight takes more like hours and varies with the UV index.

OK, now I'd love to kick this around somemore with some of the "blue man troops", or anybody else who has any "bright" ideas. (I made a pun....geez I crack myself up).
OM
You crack us all up OM.
An' looks like ya got lotsa "cute" in yer genes too.

Here's a thought.

How fast does that pup darken a "transitions" lens from say, 24" away?
And how does that compare to noonday sun on a clear n sunny day?
Now it's yer turn to carry the rhyme, that is, if you'd care to play?

Sweet pups,
Wee

That'l be one wooden nickel, please