The definition of virtual reality comes, naturally, from the definitions for both ‘virtual’ and ‘reality’. The definition of ‘virtual’ is near and reality is what we experience as human beings. So the term ‘virtual reality’ basically means ‘near-reality’. This could, of course, mean anything but it usually refers to a specific type of reality emulation.
Most up-to-date virtual realities are displayed either on a computer monitor or with a virtual reality headset (also called head-mounted display), and some simulations include additional sensory information and focus on real sound through speakers or headphones targeted towards VR users. Some advanced haptic systems now include tactile information, generally known as force feedback in medical, gaming and military applications. Furthermore, virtual reality covers remote communication environments which provide virtual presence of users with the concepts of telepresence and telexistence or a virtual artifact (VA) either through the use of standard input devices such as a keyboard and mouse, or through multimodal devices such as a wired glove or omnidirectional treadmills. The immersive environment can be similar to the real world in order to create a lifelike experience—for example, in simulations for pilot or combat training—or it can differ significantly from reality, such as in VR games.
History of virtual reality
The first traces of virtual reality came from the world of science fiction. Stanley G. Weinbaum’s 1935 short story “Pygmalion’s Spectacles” is recognized as one of the first works of science fiction that explores virtual reality. It describes a goggle-based virtual reality system with holographic recording of fictional experiences including smell and touch.
Morton Heilig wrote in the 1950s of an “Experience Theatre” that could encompass all the senses in an effective manner, thus drawing the viewer into the onscreen activity. He built a prototype of his vision dubbed the Sensorama in 1962, along with five short films to be displayed in it while engaging multiple senses (sight, sound, smell, and touch). Predating digital computing, the Sensorama was amechanical device, which reportedly still functions today. Around the same time, Douglas Engelbart used computer screens as both input and output devices.
The use of graphics, sound and input technology in video games can be incorporated into VR. Several Virtual Reality head mounted displays (HMD) were released for gaming during the early-mid 1990s. These included the Virtual Boy developed by Nintendo, the iGlasses developed by Virtual I-O, the Cybermaxx developed by Victormaxx and the VFX1 Headgear developed by Forte Technologies. Other modern examples of narrow VR for gaming include the Wii Remote, the Kinect, and the PlayStation Move/PlayStation Eye, all of which track and send motion input of the players to the game console somewhat accurately.
Several companies are working on a new generation of VR headsets: Oculus Rift is a head-mounted display for gaming purposes developed by Oculus VR, an American technology company that was acquired for US$2 billion by Facebook in 2014. One of its rivals was named by Sony as PlayStation VR (codenamed Morpheus), which requires a PS4 instead of a PC to run. In 2015, Valve Corporationannounced their partnership with HTC to make a VR headset capable of tracking the exact position of its user in a 4.5 by 4.5 meters area, the HTC Vive. All these virtual reality headsets are tethered headsets that use special curved lenses to magnify and stretch a 5.7-inch screen (in the case of Morpheus) across your field of vision. There are many more gaming VR headsets in development, each with its own special abilities. StarVR, for instance, offers a 210° field of view, whereas FOVE tracks the position of your eyes as an input method.
Some head mounted devices(HMD)
- Carl Zeiss (Carl Zeiss Cinemizer)
- Facebook (Oculus Rift)
- HTC (HTC Vive)
- Razer (OSVR Hacker Dev Kit)
- Google (Google Cardboard)
- Samsung (Samsung Gear VR)
- Sony Computer Entertainment (PS VR)
- Starbreeze Studios (StarVR)
- Microsoft (Microsoft HoloLens)
- VRVana (Totem)
- Durovis Dive
here is a VR film you might like
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