Virtual reality (often just VR) is the name for the computer technology that makes a person feel like they are somewhere else.It uses software to produce images,sounds and other sensations to create a different place so that a user feels like he or she is really part of this other place. That other place can be a real place or imaginary.
A user uses a headset which consists of a screen to project the content,and speakers to produce sounds. The technology to do this needs special display screens or projectors and other devices. Often the picture will change when the user moves their head, they may be able to ‘walk” through this virtual space and to see things in that space from different directions, and maybe move things in that space.
The term virtual reality was coined in 1987 by Jaron Lanier.