Yes, it decreases the overall intensity, but without having a great deal of
effect on the spectrum.

The amount of the decrease in intensity will depend on the thickness of the
coatings used, and the newer, more efficient windows are thicker.

I would have sworn I had a curve somewhere (I used to be the technical- and
sales manager for glass coatings for the company that made the coating
precursors). but cannot locate it.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Artwork, Books and Lots of Free Info!


"bobc" wrote in message
oups.com...
Hiya Folks.
We are getting new windows and they have Low E Glass. Will that
decrease the intensity or amount of light reaching my plants?
Thanks!
Bob