Hi Guys:
First of all Denspot, I screwed up it was supposed to be 56,450. I'll go back & edit it.
Thanks for paying attention.
Now for the hard ?.
Powercow9, I got my conversion table from this site. I typed in foot candles in the search & found a thread giving 10.7 as the conversion. If that was wrong,
I didn't know. I'll go back and edit the results right now & do all the conversions using 12.6 as the multiplier.
Thanks for setting me straight on that one Powercow9.
In the owners manual for the light meter it says [quote]This meter is capable of reading illuminance, luminance, reflectance, & transmittance up to 5,000 foot candles
(lumens per square foot). Here is the definition Stoney gave in another thread to describe a lumen [quote]LUMEN - A measurement of light output; relative to human perception
which refers to the amount of light emitted by one candle that falls on one square foot of surface located at a distance of one foot from the candle.
This meter is specifically designed for the measurement of radiant light energy that directly affects plant growth. This meter is not color corrected.
Here is another interesting thing I just read.
Most plants need at minimun 1000 ft. cl. of light intensity & a minimum of 15,000 ft.cl.hrs. of light per day to grow. meaning if the plants get 1000 ft. cl. of intensity an hour x 15 hours the will live.
And that 5,000 ft.cl. per hour is the most light intensity most plants can use, beyond that it will burn most plants.
And last for now but not least. We talk about lumens because thats the measurements the manufacturers give us to compare the different lights. If they listed par then we could go by that. But they don't list par, they list LUMENS so thats What we'll have to compare by.
Sorry Powercow9, if that seemed rude I didn't mean it to.
Well, now my brain really hurts I'm going to smoke a bowl & be right back.
Later.
86.