The term 'virtual' has been used in the computer sense of 'not physically existing but made to appear by software' since 1959. ' Virtual' has had the meaning of 'being something in essence or effect, though not actually or in fact' since the mid-1400s. 8.2 Children and teenagers in virtual reality.5.3 Relationship between display and field of view.5.2 Image latency and display refresh frequency.Virtual reality typically incorporates auditory and video feedback, but may also allow other types of sensory and force feedback through haptic technology. The effect is commonly created by VR headsets consisting of a head-mounted display with a small screen in front of the eyes, but can also be created through specially designed rooms with multiple large screens. A person using virtual reality equipment is able to look around the artificial world, move around in it, and interact with virtual features or items. Ĭurrently, standard virtual reality systems use either virtual reality headsets or multi-projected environments to generate realistic images, sounds and other sensations that simulate a user's physical presence in a virtual environment.

Other distinct types of VR-style technology include augmented reality and mixed reality, sometimes referred to as extended reality or XR, although definitions are currently changing due to the nascence of the industry. Applications of virtual reality include entertainment (particularly video games), education (such as medical or military training) and business (such as virtual meetings).

Virtual reality ( VR) is a simulated experience that employs pose tracking and 3D near-eye displays to give the user an immersive feel of a virtual world. Researchers with the European Space Agency in Darmstadt, Germany, equipped with a VR headset and motion controllers, demonstrating how astronauts might use virtual reality in the future to train to extinguish a fire inside a lunar habitat

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