An MIT-led team of architects and engineers has developed the "Digital Water Pavilion," a building with walls made of flowing water. Upon the approach of a person, a sensor detects their path and parts the water in that area, creating a sort of instant doorway that can then close behind you. "You could throw a ball at the wall, and then see an open circle drop down to meet it precisely where and when its trajectory intersected the water surface," says William J. Mitchell, head of MITâ€™s Design Laboratory.
Practical applications for the technology have not yet been addressed; but the building will be on display at next summer's 2008 Expo Zaragoza in Zaragoza, Spain.
via science mode and dumptrumpet