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virtual reality

Virtual reality is an artificial environment that is created with software and presented to the user in such a way that the user suspends belief and accepts it as a real environment. On a computer, virtual reality is primarily experienced through two of the five senses: sight and sound.

The simplest form of virtual reality is a 3-D image that can be explored interactively at a personal computer, usually by manipulating keys or the mouse so that the content of the image moves in some direction or zooms in or out. More sophisticated efforts involve such approaches as wrap-around display screens, actual rooms augmented with wearable computers, and haptics devices that let you feel the display images.

Virtual reality can be divided into:

  • The simulation of a real environment for training and education.
  • The development of an imagined environment for a game or interactive story.

The Virtual Reality Modelling Language (VRML) allows the creator to specify images and the rules for their display and interaction using textual language statements.

See also: augmented reality

See a video introduction to virtual reality:

This was last updated in May 2015

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Good explanation. I can easily understand. Thanks.
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hmmm u alright
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Virtual reality can be the most important technology in these trying times. Many do consider it to be a relatively new technology, even though it's origins range as back as 1830s. 

These are the major milestones:

Stereopsis (1838)
Link Trainer (1929)
Pygmalion’s Spectacles (1935)
Telesphere Mask (1960)
Sensorama (1962)
Ultimate Display (1965)
Air Force Flight Simulator (1966)
Sword of Damocles (1968)
Video Place (1975)
Super Cockpit (1982)
Artificial Reality(1983)
Naming Virtual Reality (1984)
Virtuality (1991)
Virtual Vietnam (1997)
SAS Cube (2001)
Street View (2007)
Oculus Rift (2012)
VR Aura (2014)
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Very informative and well explained
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