Virtual reality. Cyberspace raquetball game: real strokes made by the player are returned by the Cyberspace computer through the virtual, computer-generated environment displayed in background. Admission to this virtual squash court is provided by 3-D video goggles and a Spandex- rubber glove wired with fibre-optics sensors. Spatial sensors on both headset and glove relay data to the computer on the wearer's position in space and hand movements. Virtual, in computer speak, describes equipment or programs that takes one form but is designed to give the illusion of another. Photo taken at Autodesk Inc., Sausalito, California.