http://www.hobbes-l.tc/Body.html
CFLs and LEDs suffer from the Average Lumen Fallacy: All that has to be done
is to add bulbs until we have the same Photosynthetically Usable Radiation (PUR
as opposed to PAR). The Average Lumen Falacy leaves us with a light intensity
problem that requires much greater growing skill than does an HPS flowering
lamp. You'll probably meet some of the best growers here on the CFL forum
because they have to be better to get good yields from less resources.
Plant light receptors evolved to absorb intense light over a short periods through
the day, then rest, then absorb again - they are less efficient at absorbing light
from one stationary source over 12 hours; and a chemical signal is sent by the
plant when it receives intense light: "Grow like crazy, hold nothing back! We'll get
lots intense of light later because we got it before, hold nothing back!" Like
exercising to loose weight - we don't just burn more calories while we are
running, the body's metabolism speeds up and we burn more energy 24/7, even
when we are sleeping.
If you're a Stargate Atlantis fan think Wraith biologically based Hyperdrive vs
Ancient technologically based. The Wraith's drive has to rest at short intervals but
will heal itself like any living creature. Trade offs. Plant Light Receptor vs Solar
Panel.
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