International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 01 | Jan-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 482 Virtual Reality – Opportunities and Challenges Ronak Dipakkumar Gandhi 1 , Dipam S. Patel 2 1 MTech CAD/CAM Student , Dharmsinh Desai University , Nadiad , Gujarat 2 Assistant Professor , Mechanical Engineering , Dharmsinh Desai University , Nadiad , Gujarat ------------------------------------------------------------------------***------------------------------------------------------------------------- Abstract - In today’s world , we are surrounded by blends of technologies. We have acquired majorities of these technologies into our everyday lives. Increasingly, these various technologies are getting integrated to provide us with new abilities and services. And most often a computer is the heart of such integration. This is the case with Virtual Reality a so called technology which actually is a very sophisticated integration of a number of techno-logies. Virtual Reality is a technology based on computer which assimilates specialized input and output devices by allowing the user to interact with and experience an artificial created environment as if they were in the real world. A virtual reality system is also allowing the user to search and interact with a three dimensional virtual or artificial environment created by the designer. In the virtual world , the user can do all things similar to routine as throwing a tennis ball or as excellent as flying through space. And all these things can be made to occur only because of a hand gesture or a nod. Virtual Reality is a three dimensional computer based interactive environment which simulate reality. Virtual Reality can bring us into a imaginary world which appears exactly similar to our own world. For designing a virtual reality system , one have to deals with ideas of spatial relationships and computer graphics which in turn are affiliated to mathematics , physics , arts and also human psychology. In these virtual or synthetic environ-ments , one have to take into account various physics laws like gravity , air resistance , and speed etc. Keywords: Virtual Reality, Computer based technology, Virtual Environment, Artificial Environment, Second life, Augmented Reality. 1. INTRODUCTION Virtual Reality (VR) technology is becoming more perfect and immerging with the aid of computer hardware, software and virtual world integration technology, which can show the real world dynamically. These technologies can make reaction according to people’s form , language and so on immediately after a real time communication is formed between people and virtual world. Hence , for past few years such technology has catch up much attention of researchers and companies. Virtual Reality (VR) can be defined as use of computer modelling & simulations which help a person in interacting with artificial 3D enviro-nment. This 3D artificial environment shows reality with help of some interactive devices which can send and receive information and are worn in form of goggles, headsets, gloves or body suits etc. In other words , virtual reality can be defined as use of computer graphics to simulate presence physically in artificial or virtual environment & to create a realistic looking world. Virtual Reality is a real time and interactive technology ; which means that the computer is developed to automatically detect inputs given by user and can modify instan-taneously the virtual world. Most newer virtual reality environment are visual experiences which are displayed either on a computer screen or projector ; but some simulations may also require additional sensory information like speakers or headphones. Some-times , users can also make interaction with a virtual environment either by use of standard input devices such as a keyboard, mouse etc. In practice, it is very difficult currently to get a high experience of virtual reality mostly because of technical limitations on processing power & image resolutions. However, those limitations are expected to eventually be overcomed by use of more powerful , cost effective processor and imaging technologies over time. 2. LITERATURE REVIEW Bharath et al. [1] presented their paper on “Importance & Applications of Virtual Reality in Engineering sector”. In this paper; Virtual reality is defined as an immerging technology that can provides capability to realize actual working environment . Further, discussions are made on approaches needed to realize virtual reality. Paper also explores importance and usage of virtual reality in engineering sector like design , manufacturing , insp-ection , tooling , assembly , prototyping etc . Moreover ; benefits , costs , limitations and risks associated while adopting VR are also covered and highlighted. Radharamanan et al. [2] represented their paper on “A survey of virtual reality technologies , it’s applications and limitations”. In this paper various technologies that are used for virtual reality are highlighted like Head Mounted Display (HMD) , Caves , Hand Gloves, 3D Mouse, Space ball, Full body suits, Video camera and sensor etc. In addition ; technical aspects of virtual reality techno-logies are also covered. At last advantages & limitations of using virtual reality in present and for future are also summarized.