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light question

This is a discussion on light question within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; Originally Posted by Tindomul1of9 Im not sure, but I think K stands for Kelvin(how that ...

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  1. #21
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    Quote Originally Posted by Tindomul1of9 View Post
    Im not sure, but I think K stands for Kelvin(how that relates to light, I have no idea, I'm probably dead wrong).
    I find it hard to believe that any light source has a 98% efficiency rate, as that would mean almost no energy is lost to heat. Correct me on that one orchidman!
    I was calculating the 4800 becuase my lights are only a few weeks old. Thanks for the info on the Catts though. I wonder if I can grow a Sophornitis cernua under those lights??????
    if you have 10,000 lumens, 2 feet away from the catts, that should be 5,000 LCs. if the light is closer, more FCs, if its farther, less. you shouldn't have any problem growing catts with that.

    i could be way off, though, feel free to correct me, anyone.

    diane: i see, thanks.

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    all color is desrcibed as temperature.The scale that they use is Kelvin,
    0degrees Kelvin = -273degress Celsius.
    An incandesent lamp has a color of approx 2700 degrees Kelvin and the closer that you get to blue the temperature increases so that the equivalent to noon day sun = 6500 degrees kelvin

    I should have mentioned that I have a meter for measuring light that I bought from the local electronics store for less than $100

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    i guess an update here is due: tomorrow i am ordering a "150W 6500K Compact Fluorescent Grow Light." thanks for the recomendation, diane.

    thanks for the help from everyone else, too, i'm definately still looking into the flour tubes, but right now i think i need something that i will be able to move with more easilly. also, getting sick has wasted alot of time, and my catt is getting unhappy. so i am ordering this for now, and will revisit the topic again another time.

    thanks!

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