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You all will have your own imagination and some of you want to experience it in real life, Right? Science and technology provide you with this facility to live your virtual dreams in reality, Yes, I am talking about “Virtual Reality which will take you on Mars, on an amazing roller coaster and many more- whatever you want.
Virtual reality (VR) means experiencing things through computers that don't really exist. This is the simple definition but from this, the idea doesn't sound new. When you look at an amazing painting, let’s say, you are experiencing world war as it was about 100 years ago—so that's a kind of virtual reality. In the same way, if you listen to instrumental or classical music with your closed eyes, and start dreaming about things and found yourself in another world, isn't that virtual reality - a world which does not exist and you are experiencing it?
If we are going to understand why all these experiences like reading books, watching movies, and paintings, listening to pieces of music are not the same thing as virtual reality, we need to define VR very very clearly. And here is the very simple definition of VR:
An imaginary but believable and interactive 3D computer-generated world that you can see and explore so you feel you really are there, physically and mentally.
Very specially, Virtual Reality is,
Believable: You really need to feel and believe like you are in your imaginary and virtual world, whatever it is - Mars or any War.
Interactive: Virtual Reality or VR world needs to move with you. You can watch a 3D movie and be there on Moon.
Computer-generated: Computer is a powerful machine and can generate 3D realistic graphics that are fast enough to make believable, interactive and alternative worlds that change in real-time as we move around them.
Explorable: The virtual world is very large if you have a great imagination power. Though realistic painting shows only one scene and a book can describe a lot but exactly as the author describes.
Immersive: To be both believable and interactive, Virtual Reality or VR needs to engage both your body and your mind. Imagine a painting from the world war artist which can give you glimpses of conflict but that can never fully convey the sight, sound, smell, feel of the battleground. You can play a flight simulator game on your home PC and be lost in a very realistic, interactive experience for an hour, but it's not like using a real flight simulator.
We can see from this why reading a book, looking at a painting, listening to classical music, or watching a movie doesn't qualify as virtual reality. All of them provide non-immersive or partial glimpses of another reality, but none are interactive, explorable, or fully believable.
Imagine, you are watching a movie in the theatre about space. You are watching mars on the screen and suddenly when you turn your head, you will see that you are on earth and this way illusion will disappear. WHatever interesting you are watching on the screen, you can not touch it and feel it or walk towards it; again, the illusion will simply disappear in a fraction of seconds. So all these forms of entertainment are essentially passive: possible they might be, but not actively engage you in any way.
Virtual Reality is quite different. It makes you visualize and live in your visualization. It is 2-way interactive: as you respond to what you see, what you see responds to you: if you turn your head around, what you see or hear in VR changes to match your new perspective.
"Virtual reality" is used as a marketing buzzword for captivating, interactive video games or even 3D movies and television shows, none of which really count VR because they don't engage you either fully or partially in a virtual world.
Things like interactive games and computer simulations would certainly meet parts of our definition up above, that’s why there is surely more than one approach to build a virtual world.
Here are a few of the bigger variations:
To feel or experience VR completely, we need three things.
Very First thing is - a possible and richly detailed virtual world to explore, can say a computer model or simulation in other words.
Second is - A powerful computer that can detect what we are going and adjust our experience accordingly in real-time.
The third one is - hardware linked to the computer that fully immerses us in the virtual world as we roam around.
A non-immersive can not give you the complete VR experience. They don't take you back thousands or many years and create the sounds, smells and feel of anything. They can just give you a rich experience than an animated movie.
Virtual world games are not fully VR games if they don’t contain all the 5 ingredients - believable, interactive, computer-created, explorable and immersive.
But one thing they do offer that cutting-edge VR typically doesn't is collaboration: the idea of sharing an experience in a virtual world with other people, often in real-time or something very close to it. In the future, Collaboration and sharing can become increasingly important features of VR.
Virtual reality was one of the hottest, fastest-growing technologies in the late 1980s and early 1990s, and had a rich history but the rapid rise of the World Wide Web largely killed off interest after that.
It has its own place in technology and in today’s era, everyone wants to do something new with VR. With Facebook's growing interest in technology, the future of VR seems likely to be both Web-based and collaborative.
One can experience Virtual Reality using different equipment which can take him/her in their imaginary world. Equipment like Head-mounted displays (HMDs), Immersive rooms, Datagloves, and Wands.
All this is what Virtual Reality is and where it can be useful but if you want to know about the history of Virtual Reality then visit this.
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