hello all this time I summarize the article about virtual reality

Resume

Virtual reality is a technology that makes the user or the user can interact with the environment that exists in the virtual world simulated by the computer, so that users feel they are in the environment.

The main advantages of virtual reality is an experience that makes the user feel the sensation of the real world in the virtual world. Even the development of virtual reality technology currently allows not only the sense of sight and hearing are able to feel the sensation of the real from the virtual world of virtual reality, but also the other senses.
True virtual reality technology has been widely applied in some industrial sectors such as medicine, aviation, education, architect, military, entertainment and others. Virtual reality is very helpful in simulating something that is difficult to be presented directly in the real world. As is the case for the military field, instead of immediately deploying soldiers to the battlefield as exercise, can present a virtual reality simulation of virtual war. The soldiers could feel the sensation of being in a real battlefield with virtual reality. Surely this could be more practical and more economical.
Utilization of virtual reality is also very helpful in the field of aviation. By using a virtual reality, the pilots could be trained to fly a virtual plane. The pilots could feel the sensation of flying the aircraft without having to actually flying a real plane. And will certainly avoid the risk of accidents during training.
There are four important elements in the virtual reality. The four elements are as follows:
A virtual world, a virtual world creating content in the form of a screenplay or script
Immersion, a sensation that brings the feel of virtual reality technology in a real environment that though fictitious. Immersion is divided into three types, namely:
Mental immersion, making its mental feel like being in a real environment
Physical immersion, make physical users to feel the atmosphere around the environment created by the virtual reality of the
Mentally immersed, giving the sensation to users to dissolve in the generated virtual reality environment
Sensory feedback is used to convey information from the virtual world to its senses. This element includes visual (sight), audio (hearing) and touch
Interactivity on duty to respond to a user action, so that the user can interact directly in the field or fictitious virtual world

20 said I did not know

1. advantages : keuntungan
2. environment : lingkungan Hidup
3. currently : segera
4. immediately : penggelaran
5. deploying : pasti
6. Surely : Pemanfaatan
7. Utilization : kecelakaan
8. accidents : kecelakaan
9. avoid : menghindari
10. fictitious : samaran
11. Immersion : pencelupan
12. dissolve : larut 
13. unplanned : tidak direncanakan
14. drastically : dramatis
15. unexpected : tiba-tiba
16. T-shaped : terbentuk
17. approach : pendekatan
18. immersed : yang terbenam
19. Mentally : mental
20. battlefield : medan perang