9 Scientific apparatus and instruments, namely, optical mirrors, prisms for scientific purposes; photographic apparatus and instruments, namely, photographic cameras, photographic exposure meters, photographic filters, photographic flash bulbs and flash units; cinematographic apparatus and instruments, namely, cinematographic cameras, cinematographic films, cinematographic machines and apparatus, video cameras; optical apparatus and instruments, namely, optical filters, optical glasses, optical lens sights, optical scanners, optical readers, optical reflectors; Weighing apparatus and instruments, namely, apparatus for weighing a person or body part; Measuring apparatus and instruments, namely, position sensors, motion sensors, force sensors, temperature sensors, physiological body sensors for measuring length, mass, density, relational position of body parts as compared to other body parts, temperature and pressure; Optical sensors, sensors for determining reflectivity, and sensors for measuring acceleration; Time recording apparatus; Signaling apparatus and instruments, namely, signal processors; Teaching apparatus and instruments, namely, medical teaching mannequins, video projectors, overhead projectors; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical controllers; Data processing equipment, namely, data processors, central processing units for processing information, data or images; Computer software for controlling a virtual reality system; Computer peripheral devices, namely, computer keyboards, wrist rests for use with computers, interfaces for computers; Computer monitors; Computers; Computer game programs, computer operating programs; Electric and fiber optic couplings; Data processing apparatus, namely, data processing equipment for operating a virtual reality system; Remote control apparatus for controlling a virtual reality system; Electronic card readers and flash card readers; Measuring apparatus, namely, apparatus for measuring position, motion, force, temperature, humidity, electrical quantities, and physiological body parameters of a person's body parts, namely, length, mass, density, relational position as compared to other body parts, temperature and pressure; Measuring apparatus, namely, apparatus for measuring surface reflectivity and absorption; Amusement apparatus adapted for use with an external display screen or monitor; Data banks, namely, computer hardware and operating software for organizing, recording and accessing data; Computer hardware; Data memories, namely, computer hardware and software for collecting and managing data; Components for computer hardware for control and/or monitoring, namely, components for a virtual reality system, namely, controllers, displays, button panels, and bolsters, and computer hardware and operating software associated therewith