Abstract: Virtual Reality (VR) is presently a hot, up to date topic in the field of computer science. Virtual reality can be defined as “a computer system, which is used to create an artificial world with an ability to navigate through that world and manipulate objects in that world.” The two types of VR are immersive VR and non immersive VR. The most commonly used concepts for developing 3D worlds are Rendering and Programming .we can also involve in the VR using some hardware components like head mounted display (HMD), Cave automatic virtual environment (CAVE). The virtual reality system create full color 3 dimensional images, track the user’s body movements and changes the image instantly as the user interacts and moves through the virtual world. Some of them are window on world (WOW), immersive systems and telepresence. The VR concept is used in many applications like in scientific, education, and training fields. In the nearby future virtual reality will become better cheaper, and more accessible. Virtual reality is a very powerful user interface technology and can become a blessing to the world if used to its potential.

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