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Polycarbonate transmittance in 5/6 of the NIR & 1/5 of the SWIR regions. Also, polycarbonate is almost completely transparent throughout the entire visible region of the spectrum and very sharply cuts off to ~0% transmission at almost exactly 400 nm, blocking all UV light transmission
UV light is beyond the violet range, but is the light we want for our plants contained within the visible range?

This chart show how plexiglas cuts off sharply at 1660 nanometers, but shows good transmission from 860 - 1600. Where are our favorite reds, whites and blues on that chart?

http://upload.wikimedia.org/wikipedi...ansmission.png

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