Definition Virtual Reality (VR)

The best way to get a definition of the term ‘Virtual Reality’ is to investigate both of these two words:[1]
Virtual is originally a French word and means: apparently, the possibility to exist
Reality is an English word and means: Fact, Actuality

That means VR is a seeming, an apparent actuality. When we look for a definition that fits also for the informatic we can find one from Astheimer or from Dörner.
Astheimer says that “The term Virtual Reality means, that there are techniques which allow a person, to integrate directly into a computer-generated world. In this man-machine-interface more human senses are considered at the same time.”[2]
Dörner says that“Virtual Reality (VR) describes the displacement of an observer to another, seeming reality using a computer system. Through special immersive VR technologies, the viewer should feel a presence in an apparent reality.”[3]

To stimuli the human minds with the virtual sensations there are different interfaces:
Optical Interfaces: Interfaces for the visual perception system. These interfaces are the most important ones. There are different models like glasses or Head-Mounted-Displays.[4]
optical interface

Acoustic Devices: Devices which are to address the acoustic sense of the people are in an advanced development, but it is still complicated to implement the three-dimensional listening without the use of many speakers.

Haptic Devices: This can be devices like a data glove. This devices are not very high developed, the problem is, that devices needs to adapted to each separate user.[5]
Haptic Device

Possible UseCases for VR:
Car industry: Particularly in the development phase of a new car, the VR technologies plays a major role. If a new design of a car is developed, a three-dimensional computer-model of the car will be created that the design can be examined.[6]

Medicine industry: In medicine, the VR technology is already in use for daily business. For example, organs are simulated virtually and serve as a training facility for young surgeons.[7]

Entertainment industry: The greatest potential of VR is maybe in the entertainment industry. VR is increasingly used in cinemas, theaters, amusement park and the game industry. [8]

[1] A. Preisser, 2010
[2] Astheimer et. Al., 1994
[3] Dörner, 2009
[4] [eMargin 10] 3DVISOR.com. Pdf-Online-Quelle. , 2010.02.22.
[5] CyberGlove Systems 10] CyberGlove Systems. Online-Quelle. , 2010.02.21
[6] TecCHANNEL IT EXPERTS INSIDE. Online-Quelle. (2010.02.22)
[7] Prof. Dr. med. Linus Geisler Private Homepage. Online-Quelle. (2010.02.17)
[8] Digital.World. Online-Quelle. (2010.02.22)

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