A term that applies to computer‐simulated environments that can simulate a physical presence in places in the real world, as well as in imaginary worlds. Most current VR environments are primarily visual experiences, displayed either on a computer screen or through special stereoscopic displays. Some simulations include additional sensory information, such as sound through speakers or headphones.
An artificial environment created entirely by computer-driven special effects. Virtual reality in modern usage goes well beyond the wearing of special glasses to watch a 3D movie. Not only does virtual reality now create the impression that the environment is real, but it allows one to interact with the artificial environment through use of special equipment. By wearing a special visor and gloves, or even a complete body-suit, the user can simulate the sensation of moving around in the environment. Powerful computer software displays the perspective-corrected images on the visor that create the necessary illusion for the wearer. Sounds and other stimulii may be added to enhance the effect. With computing power becoming ever more economical, there promises to be an explosion in the use of virtual reality. While its entertainment potential certainly gets the most attention, virtual reality already makes it possible to train pilots more safely and economically, and allows the dissection of a frog without a drop of blood ever being spilled.