The AMOEBA (Advanced Multiple Organized Experimental Basin), a circular tank created by Mitsui Engineering at their Akishima laboratory, is able to form letters with standing waves.
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.
Each letter takes about fifteen seconds to produce; Akishima Labs expects to sell the device to amusement parks in a package that combines acoustics, lighting and fountain technology.
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