Quote:
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Originally Posted by AndyL
White paint is one of the better reflectors actually.
Quote:
Stolen from http://www.thekrib.com/Lights/reflectors.html#8
These figures are from an old hydroponics source. Unfortunately I
know longer have the URL. These figures, represent the percentange
of light reflected.
Mylar 90-95
Flat white paint 85-93
Semi-gloss white 75-80
Flat yellow 70-80
Aluminum foil 70-75
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Andy |
andy you are talking about paints, a plastic film that will melt with MH and kitchen supplies. compare them to my home made reflectors that have a reflectance of 98.9%. there were actualy some real tests done that included paint and such as well as professional made reflectors. paint was one of the worst I will try dig up that article also for you but here is another that shows paint is not as good as any of the popular designed reflectors and a quote
"The total light incident on the three different areas 3’ X 3’ ft, 2’ X 2’ and 1’ X 1’ at 6” from the lamp using a flat sheet reflector with white paint is shown in the table 4 below. As can be clearly seen from the data, having any of the above mentioned reflectors is better than just having a painted hood."
the article is
http://www.advancedaquarist.com/issu...03/feature.htm
now this is just showing comercial one but I will try find the link to the other one that tests all kinds of stuff.
Steve
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