Virtual worlds

The user accesses a computer-simulated world which presents perceptual stimuli to the user, who in turn can manipulate elements of the modeled world and thus experience a degree of telepresence.[6] Such modeled worlds and their rules may draw from the reality or fantasy worlds. Example rules are gravity, topography, locomotion, real-time actions, and communication. Communication between users can range from text, graphical icons, visual gesture, sound, and rarely, forms using touch, voice command, and balance senses. Virtual worlds are not limited to games but, depending on the degree of immediacy presented, can encompass computer conferencing and text based chatrooms. Sometimes, emoticons or 'smilies' are available to show feeling or facial expression. History[edit] The concept of virtual worlds significantly predates computers. Among the earliest virtual worlds implemented by computers were virtual reality simulators, such as the work of Ivan Sutherland. Virtual world concepts[edit]

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