Help with experimental lighting

Charles S Buer buer at WPI.EDU
Sun Jun 9 02:56:31 EST 1996


Krista--

1 micromole/(meter)^2(sec) = 6.022 x 10^17 photons/(meter)^2(sec).
Moles of photons are the same as moles of chemicals.  Heating is a factor
with our fluorescent lights with incandescent additions and we are only at
90 micromoles/(m)^2(s).  Sorry, I've never used the others.

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Charles S. Buer                         |E-mail:  buer at wpi.wpi.edu
Biology/Biotechnology Dept.             |Phone:   (508) 831-5052
Worcester Polytechnic Institute         |FAX:     (508) 831-5936
100 Institute Rd.                       |http://www.wpi.edu/~buer
Worcester, MA 01609                     |
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On Sat, 8 Jun 1996, Krista Nelson wrote:

> I am begining an experiment in which I will need to grow fescue grass in a
> closed reactor.  The literature says I will need 740 micromoles of
> photosynetic light /(sec)(meter suared). I set up a bank of florescent
> lights but only got a measurement of 131.  Any suggestions for other
> lighting conditions? I have read about sodium vapor and monochromatic
> lighting but have not found a vendor to check pricing.  I will be
> measuring gas exchanges so the lights can not give off much heat. I would
> appreciate any assistance.   Does anyone know a conversion from this
> lighting units into photons?  Thanks
> 
> 




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