Write on water with water, using wave generator device

A circular tank developed by Mitsui Engineering in Japan called AMOEBA (Advanced Multiple Organized Experimental Basin), allows users to "write" letters on "stationary waves" of water.

This remarkable display device consists of fifty water-wave generators surrounding a cylindrical tank 5 feet wide and a foot deep. The wave generators move vertically to produce cylindrical waves. These "pixels" are about 4 inches in diameter and 1.5 inches in height; these form lines and shapes. The AMOEBA device can form all of the roman alphabet, as well as some kanji characters.

It takes about 15 seconds to produce each character, according to livescience.com, and the wave generator's maker will sell units to amusement parks in a science-entertainmnet package that combines sound, lighting, and water fountains. Link (thanks, Aaron the Bold)

Update: this story was blogged a few days earlier by the SciFi Tech blog: Link.