Virtual Reality is the synonym of two words ' virtual ' and ' reality '. Where 'virtual' means near (near) and reality means such an experience that we human beings feel (like truth). Therefore 'virtual reality' means like reality. This means that it is a specific type of reality emulation.
Virtual reality (VR) is a type of experience that only computers and Experience is done only with the help of hardware . There is a believable, interactive 3D computer-created world that you can feel both mentally and physically.
So let's know some essential features of virtual reality:
1. Believable: As you keep believing in such a virtual world, you will not know at all whether it is a virtual reality or not.
2. Interactive: This virtual world will have to move with you so that it looks like it looks more interactive. If it does not look more interactive then it cannot be called virtual reality.
3. Computer-generated: This is very important because it uses only powerful machines, which use realistic 3D computer graphics, so that it is fast enough to make it believable, interactive, alternative to the world. Can do structure. With this, it can easily be changed in real-time, which makes it appear more real.
4. Explorable: A VR world should be large and detailed so that it can be explored in a good way. Whatever realistic a painting is, but if it does not have much details then it will not be more explorable. It is very important for a better VR to be explorable.
5. Immersive: To make VR more believable and interactive, VR has to be immersive to both our body and mind. If nothing will be more attractive then it will not be able to attract our mind much, so that we will get to know about the reality easily. Therefore, the more immersive the VR, the more real it will appear.
Therefore VR is a very different world. This will make you think that you are living in the midst of a completely believable virtual world. It should be two-way interactive so that the way you do your movement, your VR also changes according to your reaction.
Types of Virtual Reality in Hindi
"Virtual reality" is often used as a marketing buzzword in compelling, interactive video games and 3D movies, television programs. Therefore, many types of VR are method according to their different features. So let's know about the different Virtual Realities:
Fully immersive For
a complete VR experience, we need three things. The first is to explore a detailed virtual world, a computer model or simulation. The second is a powerful computer that can easily detect what is going on and adjust it in the same way in real time (as the way things change, the reality also changes in a way that completely real reality Seems like). Third hardware with computer link has been broken so they can fully immerse in the virtual world to us. Often we have to wear a head-mounted display (HMD) which has two screens and stereo sound, and one or more sensory gloves. This gives us a fully immersive VR experience.
Non-immersive
A realistic flight simulator is the best example of a non immersive virtual reality in your home PC , when it has a wide screen, headphones and surround sound, a realistic joystick and other controls are used. Because not all people need fully immersed reality. This is a reality in which the reality is not fully immersive, but it is close to it to a large extent.
There are many collaborative games such as Second Life and Minecraft, which follow the first four criteria of VR (believable, interactive, computer-created and explorable), but this fifth criteria is not completely immersed in you. Does not follow. But there is this cutting-edge VR in it which is collaboration: an idea to share your experience with other people in the virtual world, which is often in real time. Collaboration and sharing is a very important feature in the future of VR.
Web-based was
a time when virtual reality used to be one of the hottest, fastest-growing technologies in the late 1980s and early 1990s, but with the World Wide Web becoming more popular, people lose some attention. Even though computer scientists had learned the method of creating virtual worlds in the web (Virtual Reality Markup Language, VRML) but it could not be more popular. The same The future of VR is web-based and collaborative with Facebook 's growing interest. Augmented reality
Mobile devices such as smartphones and tablets are just like supercomputer in our hands because nowadays these smart devices have computing power like supercomputer. If we use these smart devices properly then we can use it in many things. We also use Augmented reality to make this virtual reality more enhanced. Now the question arises what is this Augmented reality. In simple words, then it is a type of virtual reality where if we put our smart device in front of a landmark or striking building, then that inanimate object, the place automatically becomes alive. This means that Augmented reality means that it combines the experience of our real world with the information of vast virtual world, which we collectively create in the web. These two worlds are not virtual,
Which equipment do we use in virtual reality?
If you have ever seen someone using Virtual Reality, then you must have seen how they use a lot of equipment. The difference between an ordinary computer experience and a VR experience is in the nature of its input and output. Where an ordinary computer It uses tools like keyboard , mouse, speech recognition for input, while it uses VR sensors to detect how the body is doing the move. Whereas a PC displays the output on one screen, the VR uses two screens (for each eye), stereo and surround-sound speakers, along with haptic (for touch and body perception) feedback. So let's know about some input and output devices that are used in VR technology.
Head-mounted Displays (HMDs)
The difference between VR and an ordinary computer screen is that: In VR, you can see a 3D image moving smoothly, in real-time, as you move your head. This is possible because here the user has to wear a head-mounted display, which looks like a big motorbike helmet. It consists of two small screens (one for each eye), a blackout blindfold that blocks external lights (so that the user has no distractions from the real world), and stereo headphones. These two screens display slightly different stereoscopic images, making a realistic 3D perspective of the virtual world visible. HMDs usually have built-in accelerometers or position sensors that detect how your head and body are moving and adjust the picture accordingly.
Immersive Rooms
Immersive rooms are used as an alternative to HMD. Here the user is kept inside a room where the images which are displayed on the walls of that room always change from outside. As you move in the room, the images will also change. Flight simulators mainly use this technique, where images of landscapes, cities, and airport approaches are projected outside the cockpit in large screens. This gives a different reality feel.
Data gloves
This is true that no matter what the reality, we always have the desire to touch things. Even in VR technology, we can feel this thing through Data gloves. These data gloves have sensors that have been wired to the outer side of the gloves so that they can easily detect the motions. Here fiber-optic cables are used which are stretched according to the length of the fingers. Each cable has tiny cuts, as more and less light escapes from these cuts as you back and forth your fingers. At the same time there is a photocell cable at the end which measures the light, how much light reached them. This allows the computer to know what the fingers are doing. Other gloves strain gauges, piezoelectric sensors,
Wands are
even more simple than a data glove, a wand which is a stick that you can use to touch, point to, or otherwise interact with the virtual world. It has position and motion sensors (such as accelerometers) built in, and also has mouse-like buttons or scroll wheels.
Application of Virtual Reality in Hindi
VR technology is used in many places in our life. Its application is not only for individual but also in industries, factories etc. So let's know about this.
Education
is very difficult and dangerous jobs for which it is very difficult to train. Such as practicing safely in Space Trip, landing a jumbo jet, jumping a parachute, or performing a brain surgery. It is very difficult to do all these things properly and for which it is very important to have good training. Virtual reality is used exclusively to do these things. Similarly, flight cockpit simulators, surgery simulators for doctors etc. are also used.
Scientific visualization
Anything that happens in the atomic or molecular scale is really invisible. To see them, you have to sit in front of an electron microscope at all times. In the same way, if you want to design any new materials or drugs, then you have to experiment with their Molecular equivalent. All these things are applications of virtual reality. Here you can make these complex molecules in front of your eyes by not quarreling with numbers, equations, or two-dimensional drawings of molecular structures.
Medicine
VR technology is used for surgical training and drug design. Apart from this, it is also used in telemedicine (where monitoring, examining, and patients can also be remotely operated) from virtual reality. As an example, now the surgeon is located in one place and there is also a robot at a remote location, VR technology is used to do the operation here. This makes difficult surgery possible even without doctors.
Industrial design and architecture
Architects used to use cards and paper to make models earlier, but now they can easily make virtual reality computer models that anyone can see and also explore. Now cars, airplanes, and other complex, expensive vehicles are much easier to design in computer screens than real-world materials such as wood, plastic. Where earlier there was more cost in making models, it has become very easy with VR technology.
From sports and entertainment to
flight simulators to race-car games, VR technology is now used in all places, making the experience of gamers much better. If I talk about the earlier technology, then it lacked full 3D, they used to be slow, with it there were not even decent HMDs and data gloves. But now you can easily get all this experience at a very low cost.
Advantages & Disadvantage of Virtual Reality in Hindi
Virtual reality is a reality in which with the help of technology it creates a reality that resembles reality completely. Just like everything has some pros and cons, in the same way VR or Virtual Reality also has some pros and cons about which we will learn further:
What are the Pros:
1. These are better than reality
Visuals that we see in this reality are much better than reality. We use the technology of virtual reality in video games, which gives the user a feeling that he is in another world. Sound and graphics are used in VR in such a way that it is very difficult to say apart from this original reality.
2. Use in different fields
Due to its extensive features, we see virtual reality in many different fields such as military, education and health care. It gives more dimensions to these fields. With this, virtual reality is also used to view the final product in aviation and architecture.
3. Users have a very good experience.
Users have excellent experiences of using VR. Through VR technology, users feel as if they are listening to real sounds in real locations and seeing real things. This is very beneficial for disabled people where they can explore the real world. Some films in which VR is used give the audience a chance to see the whole surroundings, so that they have an interactive viewing experience.
4. Provides full detail views
Virtual reality provides a full and detailed view of any place. It is very useful for tourism sites as it provides a detailed view of any place. With this, viewers can plan their trip well and can see real locations in a good way.
5. It helps to
connect with people, through virtual reality, you can communicate with other people that you do not know in real life. It helps people a lot in building new relationships.
6. Effective communication: Effective communication
can be done easily through virtual reality. Users can communicate with other people and enjoy the conversation. This makes the users experience to communicate with others.
What are cons:
1. High cost
This technology is very expensive compared to others. Due to which it is not possible in favor of everyone, so that they can use VR technology.
2. Communication should not be shared with group of people, in
virtual reality technology, communication should not be shared with more people because it increases the chances of being dishonesty.
3. Feeling of worthlessness
Sometimes users feel that they are running away from the real world which is not good for them and it can also be very dangerous later.
4. Users get addicted many times,
often users become so addicted with the virtual world that they do not like the real world much and they always like to live in the virtual world more. It is also possible to have their health related issues.
5. Technology is still experimental
even though VR technology is used in many areas, but there are still many areas where VR technology is still in the experimental phase.
6. Training is not real in VR environment,
it happens very often that even if a candidate does good training in virtual reality, but still the probability of performing well in real world is less. Therefore, if we compare the results of real life situations with the Virtual Reality environment, then there can be a lot of difference in both.
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