B A R R Y wrote:

| Forget paint, use space shuttle heat shield tile.

What I actually did is probably closer, in principle, to stealth
technology. The major differences are that I'm dealing with a higher
input level, a wider spectrum, and a requirement to deliver the
absorbed energy for use.

There's a starting point for anyone interested in purposefully
designing this kind of stuff at
http://en.wikipedia.org/wiki/Black_body - but be aware that there's
serious effort involved - which may be why most builders don't get any
farther than the black paint stage.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/