What does the word VIRTUAL REALITY trigger in your head immediately? Does a visual come into your mind where a person wears a heavy helmet along with several cables attached with that helmet? Are you someone who passes his days thinking about the adventurous and exciting world of computer simulations? Do you get haunted and scarified by the monstrous pterodactyls? You can be also falling to that bunch of people totally fascinated by what Neo and Morpheus was so serious about in the popular movie flick Matrix. You maybe the one who lives in a make believe world of virtual reality.

The term virtual reality is quite often used nowadays.  The term virtual reality is generally known by the ordinary men as virtual environment. That means an environment that’s not real; a scenario that have no existence at all. Generally the computer scientists or the computer engineers they prefer not to use this term virtual reality although they themselves work on technologies. These technologies are what they can be really called as virtual reality.

What is exactly this virtual reality? It can be termed as a simulation that our computer creates to create a virtual world. This world can be anything that is essentially three – dimensional. Objects over here are life like. The user is given power to interact as well as manipulate in this virtual reality world. Users can also explore this world. The feeling that he/she will derive while exploring is that as if they are themselves present in this virtual world in flesh and blood. Computer scientists and engineers and visual experts have devised a whole lot of technical applications and devices and gadgets and tools to
improvise these effects in people.

A Virtual Reality experience generally should fulfill the following criteria;-

• Thinking from the user’s point of view the objects used in a Virtual Reality environment should be life like sized and generate the look and feel of the real world objects. It has to be compulsorily a three dimensional make.

• The tools used must track the user’s activities very efficiently. His hand movements, eye and neck movements, the actions and motions everything should be track by the applications carefully and very efficiently. The result or the final outcome of tracking those movements is to match it with the user’s actions inside the virtual world. The change should be reelected on screen.
  

These articles will actually make you understand the whole concept of Virtual reality, its characteristics. The technology used by the Virtual Reality simulations. We will also cover the applications, area of concerns and a small overview of the background and history of virtual reality.

A lot of virtual reality is based on the vision of the individual and medical procedures such as laser eye surgery have helped people make the most of virtual reality when previously thier eyesight may have suffered

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• History Of Virtual Reality
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