Virtual reality technology is now widely used in many fields, including medicine, architectural engineering and the military, and has even been used to sell merchandise.
For example, a Japanese company launched a "virtual kitchen" to promote its products. Customers can wear a special monitor and a pair of data gloves to feel like they are in the kitchen. You can walk back and forth in the kitchen; you can open the kitchen door and drawers, use the kitchen utensils you have purchased, to see if it is satisfactory. Obviously, it's much easier to choose from a virtual environment that simulates reality than it is to choose from a shelf.
Virtual reality technology is a set of simulation technology, sensing technology, display technology, computer technology and other modern science and technology in one of the high technology. The use of computer graphics technology, can simulate the kitchen supplies such as those mentioned above, a class of physical objects, but also out of thin air into something vivid, you can see, hear the audio-visual works. For example, can simulate the seabed dragon palace, so that people in the shrimp soldiers and crab generals; can also simulate the objective existence, but usually people can not feel or access to things, such as the atomic world of all that happened. Very rare is that the virtual reality technology to simulate the environment is not "dead", and will be different with the human reaction to different scenarios.