9 APPARATUS FOR RECORDING, TRANSMITTING OR REPRODUCING VIRTUAL REALITY IMAGES AND SOUND, NAMELY, COMPUTERS AND OPERATING SOFTWARE FOR VIRTUAL REALITY PRODUCTION AND VISUALIZATION, AND PROJECTION SCREENS; APPARATUS AND INSTALLATIONS FOR SPATIAL REPRODUCTION OF VIRTUAL REALITY IMAGES AND SOUND, NAMELY, PROJECTION SCREENS AND DISPLAY WALLS; AND VIRTUAL REALITY COMPUTER HARDWARE FOR CONSTRUCTING VIRTUAL REALITY ROOMS; VIRTUAL REALITY DATA PROCESSING EQUIPMENT, NAMELY, COMPUTERS; SOFTWARE STORED ON DATA CARRIERS, NAMELY, SOFTWARE PROGRAMS FOR CREATING VIRTUAL REALITY IMAGES AND SOUND AND FOR CONTROLLING STEREOSCOPIC REPRODUCTION OF VIRTUAL REALITY IMAGE SEQUENCES AND THE REPRODUCTION OF SOUND; VIRTUAL REALITY LIGHT PROJECTORS; GRAPHICS CALCULATION MODULES, NAMELY, INTEGRATED CIRCUITS; PC PLUG-IN GRAPHICS AND SOUND CARDS; PROJECTION SCREENS; PERIPHERAL COMPUTER DEVICES, NAMELY, SENSOR GLOVES, GYROSCOPE COMPUTER MICE; AND SENSORS FOR SENSING HEAD, EYE AND WALKING MOVEMENT