At 09:30 AM 11/15/2004 +1000, you wrote: >Date: Thu, 11 Nov 2004 13:56:06 -0600 >From: <[EMAIL PROTECTED] >Susan wrote: >I received a request from an architecture student asking about the effects of >coloured glass in a greenouse. Does anyone know a source of information on >the effects this might have? Here's the full request: > >"Hello. I am an architecture student at the Rhode Island School of >Design. We have been given an assignment to design a greenhouse for >orchids. I have a question about growing orchids that may affect my >design. I was wondering if colored glass would affect the amount of >sunlight used for growing orchids significantly. I know different >species require different amounts of sunlight but am curious as to >whether color filtering can be used to control light. In other words, >will different frequencies of the color spectrum enable me to control >the amount of light that enters my greenhouse? Thank you for taking the >time to read this. I hope to hear from you soon." > > >Susan Taylor >Orchids Editor at BellaOnline > >Hi Susan >I would have tought that his most useful resource would be his School library. >Most all libraries are connected to various databases these days and can >search topics easily. > >Colin Hamilton >Webmaster >Australian Orchid Council/"OrchidsAustralia" >Rockhampton, Qld. Australia >www.orchidsaustralia.com >I wonder if other dogs think poodles are members of a weird religious cult. >--Rita Rudner >_______________________________________________ >the OrchidGuide Digest (OGD) >[EMAIL PROTECTED] >http://lists.orchidguide.com/mailman/listinfo/orchids
Well, photosynthesis occurs primarily at two points of the spectrum of visible light...one peak is in the red area while the other is in the blue region. Any use of colored tinting on greenhouse glass could reduce the effective light strength in these regions and thus inadvertently reduce the plants' ability to make food. I would personally recommend against using tinting. If one needs a reduction in light levels, shadecloth is probably preferable. ---Prem Orchid Art, T-shirts, calendars, mugs and more http://www.premdesign.com/orchidpics
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