1. Introduction
1 Virtual reality (VR) is a technology used for interaction with a computer generated environment. It is a simulated version of the real environment and can be experienced in three dimensions. Screens are used to display this visual experience. It also provides an interactive experience wherein the display is according to the tactile feedback received from the user. The idea of a lifelike experience in a simulated environment is what drives the entertainment industry to evoke virtual reality concepts. Examples include the US air forces who practice their parachuting skills by wearing a headset that simulates the environment of the user jumping off a plane and flying through the air. Head mounted display pieces have been used by wearers to place on their heads and see virtual reality in its full glory.