+1 to Godel Escher Bach
Unknown Quantity by Derbyshire, I believe he has another book out for Riemann's Hypothesis
anything by Martin Gardner (may be more appropriate to younger students, but definately interesting!)
OK, so a while back now I was working on a business plan and stumbled across the website of a startup company offering a very intriguing product, a small wind and solar generator system. The product is about the size of a digital satellite dish and the basic unit is claimed to produce 300 watts and includes a 700 watt inverter. Being the impulse buyer that I am, I quickly purchased some of these units but sadly they still haven't arrived. I'm starting to worry that I've been duped. My questio
(1) Never draw what you can copy. (2) Never copy what you can trace. (3) Never trace what you can cut out and paste down.