By Elizabeth Svoboda
Posted 01.22.2006 at 3:00 am 0 Comments
Sand castles are ephemeral by natur—a good swift kick will destroy the sturdiest silicon-dioxide fortress in seconds—but scientists have learned that there are ways to maximize your creation's strength. Clark University physicist Arshad Kudrolli recently published a paper in the journal Nature Physics on just this topic, entitled"Maximum Angle of Stability of a Wet Granular Pile.â€
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.