Far-red light box

Robinson, Dr. David drobinson at bellarmine.edu
Thu Aug 17 09:54:15 EST 2000

A cheap way to make a far-red-rich environment is to use incandescent bulbs
filtered by a combination of both red filters and blue filters (the blue
filter removes the red light and vice versa).....this greatly reduces the
amount of light passing through but does enrich the far-red. I have had good
results with this on the lettuce seed germination experiment....but I have
also had failures with it.

Dave Robinson, Bellarmine University, Kentucky

> -----Original Message-----
> From:	Colin Mitchell Beier [SMTP:cbeier at vt.edu]
> Sent:	Thursday, August 17, 2000 12:11 AM
> To:	plant-ed at hgmp.mrc.ac.uk
> Subject:	Re: Far-red light box
> just a note, i remember purchasing filters for far-red.  perhaps you could
> construct a tube or something that would transmit the light into the box,
> but distance the bulbs to allow some cooling.  perhaps a tube lined with
> reflective surface interior, such as mylar, but that might screw up your
> spectrum.  sorry nothing concrete, just thinking out loud and trying to
> help.
> good luck, an interesting phenomenon
> colin
> "Artus, Nancy N." <nartus at wcupa.edu> wrote in message
> news:B47C27775351D41197DC00805FEA78A7808582 at mail.wcupa.edu...
> > I am designing red and far-red light boxes for use in the classical
> > phytochrome experiments.  The red box is straight forward since it uses
> a
> > fluorescent bulb and won't require cooling.  I am having a harder time
> with
> > the far-red box that requires incadescent bulbs.  I am interested in
> hearing
> > about the designs of far-red set-ups that have worked for you.
> > Thanks.
> >
> > Nancy Artus
> > Department of Biology
> > West Chester University
> > West Chester, PA 19383-2130
> >
> > (610) 436-3546
> > nartus at wcupa.edu
> >
> >
> > ---
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