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AbstractVirtual reality (VR) is a simulated reality created by the use of computers. According toresearchers, it is a way to eradicate the difference between user and machines. It allows the userto experience beyond just looking at screens. The present study provides an overview of virtualreality and their types. The various instruments employed in developing such VR is described.The different area of application of VR has been described along with its potential. The VR alsohave some side effects which are hard to be controlled and needs proper training andmanagement. Therefore different challenges faced by the VR technology has been detailed inbrief.IntroductionVirtual reality is allowing a person to experience the virtual objects that don't exist in reality. VRis not an old innovation and has changed the lives in a couple of years. The idea of VR waspresented by sci-fi journalists and researchers a long time back, however, is currently turninginto a drifting innovation around the world. Furthermore, since apparently, VR will starting nowand into the foreseeable future be a certain piece of the world, it is imperative to examine theroutes in which it will influence humanity. A lot of media intrigue has developed yet only a fewof the geeks know basic standards and open issues about VR. Jaron Lanier initially coined theterm Virtual Reality in 1989. VR can be fully immersive, non- immersive collaborative, web-based or augmented. The projection in the VR is the mathematical model, and the extension offield view is done by coupling stereoscopic displays which let the feeling of being at thoseplaces. VR allows the use of both 3D sound and images along with the force feedback and smell
detection. VR finds its applications in various areas like human health, medicines, flightsimulations, etc.
DescriptionIt is typical that technological advancements are changing our world now and then. It has beenobserved that within 20 years the technological marvels have changed the daily routines of livingon the planet. Some of the technical advances are beyond our extent of perception, and we areunable to comprehend and understand them correctly regarding our thinking, feeling, living andactions.One such technical advancements in new communication technology are virtual reality (VR). Itis a type of framework that empowers single or numerous clients to move and respond to acomputer recreated setting. It contains different gadgets, which permit consumers to detect andcontrol virtual items in a similar way that they are real things. VR's characteristic style is theinteraction in a manner that lets members being overwhelmed and totally immersed in themimicked world. The virtual universes in which members are inundated are constructed throughcomputational models (Luck and Ruth, 2000). There are three types of virtual realities; one is byemploying earphones, helmet, and a special gloves pair or joysticks which are managed bycomputer systems and surrounded by exceptional sound and graphics. The second one is by theuse video cameras, in which cameras trace the image of the user in an artificial setting, the userhas the rights of moving the objects in such simulated worlds. The third one is developed by theuse of 3dimensional imaging technique and screen is curved in shape. The figure 1 shows totalunique users from 2009 to 2013