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well collecting on what u guys commented about light n all that, I decided to try someting out, and I put a magnifying glass 1" over my plant.. i also took a cd and reflected the sunlight intothe plant but on such an angle that the blue, green, and purple covered the plant.. I also put my 24w fluros...
2days have gone by and now the seedling has grown lyk 4" no soil!!
rodekyll is right about the focal point
if you were to start with a bulb that doesnt put out shit for watts and regather all the light that disperses in all directions and you could focus all of it down onto your plant without the focal point being too narrow then it could work.
as far as hot spots indoors with lamps...........
try burning an ant with a magnifying glass indoors
won't work
just like hot spots created by bends in foil are a myth and magnifying glasses are a lot better at focusing light than a little fold in foil could ever be
and on to the glass blocking out all uv light........
if a lamp were to create uv light glass indeed did block out all uv light then it would be blocked out from the glass of the bulb itself right from the start
btw.. my reply wit the cd n all that was false lol ( i was high) but i DID do it.. nothing happened lol
I was walking today, and someone was driving down the sidewalk in the opposite direction. As I was being thrown onto his hood with the impact, it occured to me that his headlights are also fresnel lenses. I helped myself to them (he wasn't objecting -- I think he was reluctant to leave his car), and sure enough, I can use them to columnate the light from my 400w MH. These were square headlight lenses from a subaru that are simply sealed "covers" over small, separate bulb elements. Ought to be easier for you all to come by than the method I used .. . and fun to play with, too!
Turtle I made fiber optic cable and it does have an IR coating of sorts under the buffer (outer coating) it is either Med Na or High Na or so it was called but is not sodium and gives you a crazy rash if you touch it. Very unstable and must be heated to liquify. It is cured under 600 watt flouresent bulbs the size of a permanent marker. I was going to try growing under these lights but the engineer told me they produce harmfull RF waves so I did not. not only that but the little buggers get damn hot. They are pricey aswell for a ballast setup. all glass bulbs no metal. prob need a certain ingition temp. The thing about the cable is it really does not produce light out of the sides and just really out of the ends unless reflected back thru the buffer which is made of like kevlar or nylon. The nylon is nasty shit to work with.
As far as the glass goes Lumens are decreased every layer of glass they travel through. Light waves can also be streched making a strange or unbalanced spectrum. What that means is beyond me right now, but it sounds like a groovey experiment.
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c
I have a film scanner made by an outfit called "IMACON". It costs about $15k. It has two of those bulbs in it. They're about $80/ea and have a half-life of about 50 hours, I think. That would get spendy in the grow room!
We would use them for much more then 50 hours. But I dont think anyone really monitored the lumens.
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solar tube
[QUOTE=karmaxul]We would use them for much more then 50 hours. But I dont think anyone really monitored the lumens.
I don't monitor the lumens either, except to notice that my scans start to lose detail due to not enough light on the subject. Then I change bulbs. The difference isn't great enough for my eye to notice, but the film sure does!
Nice, thanks you use a cage for rf waves or was I most likely lied to about them being harmfull. Most likely it was the latter.
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c