In reply to Wesley Bruce's message of Sat, 08 Oct 2005 13:16:29 +1000: Hi, [snip] > >A key to space elevators, solar chimney technologies and big flying jet >stream windmills is *zero weight building materials*. I have a design >for such a material; an expanded foam filled with hydrogen and helium. >Its meant to be Buoyant up to 5 km and ultralight but stiff above that >hight.
IOW it would be buoyant for the first 0.01% of the distance. Regards, Robin van Spaandonk In a town full of candlestick makers, everyone lives in the light, In a town full of thieves, there is only one candle, and everyone lives in the night.
