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12 Facts About Virtual Reality

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Virtual reality or virtual realities typically refers to computer technologies that use software to generate realistic images, sounds and other sensations that replicate a real environment, and simulate a user's physical presence in this environment, by enabling the user to interact with this space and any objects depicted therein using specialized display screens or projectors and other devices.

Computer software, or simply software, is that part of a computer system that consists of encoded information or computer instructions, in contrast to the physical hardware from which the system is built.

A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically.

How Real is Virtual Reality? by Austin Evans

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VR has been defined as "...

Virtual Reality: Explained! by Marques Brownlee

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a realistic and immersive simulation of a three-dimensional environment, created using interactive software and hardware, and experienced or controlled by movement of the body" or as an "immersive, interactive experience generated by a computer".

Three-dimensional space is a geometric setting in which three values are required to determine the position of an element.

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A person using virtual reality equipment is typically able to "look around" the artificial world, move about in it and interact with features or items that are depicted on a screen or in goggles.

Art is a diverse range of human activities in creating visual, auditory or performing artifacts, expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power.

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Virtual realities artificially create sensory experiences, which can include sight, touch, hearing, and, less commonly, smell.

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Most 2016-era virtual realities are displayed either on a computer monitor, a projector screen, or with a virtual reality headset.

A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience.

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HMDs typically take the form of head-mounted goggles with a screen in front of the eyes.

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Some simulations include additional sensory information and provide sounds through speakers or headphones.

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Some advanced haptic systems in the 2010s now include tactile information, generally known as force feedback in medical, video gaming and military training applications.

A video game is an electronic game that involves human interaction with a user interface to generate visual feedback on a video device such as a TV screen or computer monitor.

Haptic or kinesthetic communication recreates the sense of touch by applying forces, vibrations, or motions to the user.

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Some VR systems used in video games can transmit vibrations and other sensations to the user via the game controller.

A game controller is a device used with games or entertainment systems to provide input to a video game, typically to control an object or character in the game.

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Virtual reality also refers to remote communication environments which provide a virtual presence of users with through telepresence and telexistence or the use of a virtual artifact, either through the use of standard input devices such as a keyboard and mouse, or through multimodal devices such as a wired glove or omnidirectional treadmills.

Telexistence is fundamentally a concept named for the general technology that enables a human being to have a real-time sensation of being at a place other than where he or she actually exists, and being able to interact with the remote environment, which may be real, virtual, or a combination of both.

Telepresence refers to a set of technologies which allow a person to feel as if they were present, to give the appearance of being present, or to have an effect, via telerobotics, at a place other than their true location.

An omnidirectional treadmill is a mechanical device, similar to a typical treadmill, that allows a person to perform locomotive motion in any direction, allowing for 360 degrees of movement.

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The immersive environment can be similar to the real world in order to create a lifelike experience—for example, in simulations for pilot or combat training, which depict realistic images and sounds of the world, where the normal laws of physics apply, or it can differ significantly from reality, such as in VR video games that take place in fantasy settings, where gamers can use fictional magic and telekinesis powers.

A physical law or scientific law is a theoretical statement "inferred from particular facts, applicable to a defined group or class of phenomena, and expressible by the statement that a particular phenomenon always occurs if certain conditions be present."

Psychokinesis, or telekinesis, is an alleged psychic ability allowing a person to influence a physical system without physical interaction.

"Lifelike" is an adjective that relates to anything that simulates real life, in accordance with its laws.

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