The computer-generated simulation, consisting of sights, sounds, etc., of a three-dimensional environment that someone using special electronic equipment may interact with in a seemingly physical way.
Such a simulated environment.
A computer simulation of a real or imaginary system that enables a user to perform operations on the simulated system and shows the effects in real time.
A computer simulation of a real or imaginary world or scenario, in which a user may interact with simulated objects or living things in real time. More sophisticated virtual reality systems place sensors on the user's body to sense movements that are then interpreted by the system as movements in the simulated world; binocular goggles are sometimes used to simulate the appearance of objects in three dimensions.
A computer-generated reality that projects the user into a 3D space. Using a stereoscopic headset that provides a completely immersive experience, the virtual reality (VR) system is operated by the user's head and hand movements or a physical control unit, the latter commonly used with virtual reality games. In the early days of VR, data gloves tethered by wires to a computer were used to track hand gestures.The very first virtual reality systems were created for pilot and astronaut training, employing a physical housing that looks like the inside of a cockpit. Extremely costly and still being used, they provide a totally realistic experience that simulates taking off, flying and landing (see flight simulator).Like Real LifeWhen people wear ordinary 2D or 3D goggles, turning their head horizontally or vertically changes nothing (see video headphones). However, just as in real life, when people move their head with a VR headset, the view changes. VR headsets are either entirely self-contained units or a device into which the user's smartphone is inserted (see VR headset, Oculus, Samsung Gear VR, Daydream VR and Google Cardboard).Virtual Reality vs. Augmented Reality"Virtual" reality is an entirely generated environment, whereas "augmented" reality creates images or video in space in front of the user or off to the side (see augmented reality). See social VR, 3D visualization, virtual world, head mounted display, 6DOF, cyberspace, VRML and Second Life.