The definition of virtual reality

The definition of virtual reality

 Virtual reality is a virtual world created by means of technical and software, transmitted to a person through touch, hearing, as well as sight and, in some cases, sense of smell. It is the combination of all these influences on a person's feelings in the sum is called the interactive world

 VR can accurately simulate the effects of the surrounding virtual reality on humans, but in order to create a truly plausible computer synthesis from reactions and properties within the interactive world, all synthesis processes are calculated, analyzed and output as real-time behavior.

 The use of virtual reality is multifaceted: in 99 percent of cases, the animate and inanimate objects created with this technology have exactly the same properties, behavior and movement as their real prototypes have. In this case, the user is able to exert influence on all animate and inanimate objects according to the real laws of physics (if the gameplay does not provide other laws of physics, which happens very rarely).

 How it works

 Many people wonder how the technology works. Here are the three main components that are used in virtually any interaction with the virtual environment:

 Head. The virtual environment carefully, with the help of a specialized headset, tracks the position of the head. So, the headset moves the picturewhen the user turns his head - in the side, down or up. Such a system is officially called the six degrees of freedom.
 Movement. In more expensive modifications of technical support, the user's movements are monitored, and the virtual picture will move according to them. It's not about games where the user simply is in place and interacts with the environment, but about those where he moves in the virtual space.
 Eyes. Another fundamental in reality sensor is analyzing the direction in which the eyes are looking. Thanks to this game allow the user to immerse themselves in interactive reality more deeply.

 Full Presence Effect

 Already by the term of full presence, it is clear what exactly is going on: the world is a virtual reality. This means that the user will feel himself exactly where the game is located and he can interact with it. The user turns his head - the character also turns his head, the person walks within his room - the player moves in the interactive reality. There are still disputes - is it possible to completely immerse in virtual reality?

 The Leap - finger and hand tracking

 The effect of full presence is achieved through the device The Leap. This device, using a sophisticated tracking system for each movement, is still part of a very expensive and TOP helmet. However, the algorithm of operation is quite simple, and it is present in a slightly modified form in another device, namely in the HTC Vive helmet.
 
 Both the controller and the helmet in the HTC Vive are equipped with a lot of photodiodes - small devices that convert light energy into electrical.

 An important point! In general, a person faces daily photodiodes and their work. As an example, it is a photodiode responsible for lighting a smartphone. The photodiode determines how much illumination falls on it, and, based on this data, adjusts the brightness level

 The same principle of full presence is also used in the helmet. In a set with a standard BP helmet, there are two stations that, at time intervals, let a pair of beams - this is a horizontal and vertical ray. They pierce the room and get to the photodiodes on the device of the helmet and controller. After that, the photodiodes begin their work, and in a few seconds, there is an exchange of information data, during which the sensors transmit the position of the controllers and the helmet.

 This is the algorithm for creating a complete presence.

 What are the varieties of VR

 Officially, there arethree varieties of virtual reality:

 Simulation and computer modeling.
 Imaginary activity.
 Cyberspace and hardware.

 VR helmets

 The launch of interactive reality can be considered the creation of three helmets:

 HTC Vive
 Oculus Rift
 Samsung Gear VR
 The main difference between these three gadgets is only in the manufacturing companies. In the rest they are similar. All three helmets are portable and provide full immersion in the gameplay.

 Pros and cons of virtual reality

 Pros:

 The ability to fully immerse yourself in an interactive dimension.
 Getting new emotions.
 Prevention of stress.
 Creation of electronic information and training resources.
 Conducting conferences.
 Creation of objects of cultural heritage.
 The ability to visualize various objects and physical phenomena.
 The opportunity for everyone to move to a new level of entertainment.
 Cons:

 Addiction.
 Another obvious minus: virtual reality and its psychological impact on a person - it is far from always positive because there is a risk too much to plunge into the virtual world, which sometimes entails problems in the social and other spheres of life.

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