Virtual reality is a computer-generated simulation of an environment that users can interact with. It creates an immersive 3D world using specialized equipment like headsets and gloves. There are different types of VR - immersive fully surrounds the user, non-immersive uses large displays, and window-on-world displays 3D environments on regular screens. VR has applications in fields like the military, healthcare, education, and entertainment. It allows users to experience places and experiment safely, but the technology can be expensive and complex.

1. Virtual Reality
Vijohn David Kuttikadan

2. Contents
What is Virtual Reality?
History
Types of Virtual Reality
Hardware used in Virtual Reality
Applications of Virtual Reality
Advantages and Disadvantages

3. What is Virtual Reality?
Virtual Reality means feeling the
imaginary world, rather than the real one.
The imaginary world is a simulation
running in a computer.
Virtual reality is the term used for
computer generated 3D environments that
allow the user to enter and interact with
alternate realities.
The definition of ‘virtual’ is near and
‘reality’ is what we experience as human
beings.

4. History
More than one person has been
involved in the development of this
technological system.
In 1950’s visionary
cinematography Morton Heilig built a
single user console called Sensorama.
This enabled the user watch television in
3 dimensional ways.

5. Types of Virtual Reality
• Immersive Virtual Reality
• Non-Immersive Virtual Reality
• Window on world Virtual Reality

6. Immersive Virtual Reality
Immersion into virtual reality is a perception of being
physically present in a non-physical world.
Elements of virtual environments that increase the
immersiveness of the experience:
1. Continuity of surroundings
2. Conformance to human vision
3. Freedom of movement
4. Physical interaction
5. Physical feedback

7. Non-Immersive Virtual Reality
• Large display, but doesn’t surround
the user.

8. Window on world Virtual Reality
• Desktop- based Virtual Reality
involves displaying a 3-dimensional
virtual on regular desktop display
without use of any specialized
movement tracking environment.

9. Hardware Devices
• Input Devices
• Output Devices

10. Input Devices
Prio VR Razer Hydra Leap Motion
Stem Magic Wand Control VR

11. Output Devices
Headset
Sensing Gloves
3D Audio
Helsinki

12. Applications of Virtual Reality
1. Virtual Reality in the Military

13. 2.Virtual Reality in Healthcare

14. 3.Virtual Reality and Education

15. 4.Virtual Reality and Scientific Visualization

16. 5.Virtual Reality in Entertainment

17. Advantages and Disadvantages
Advantages
• Virtual reality creates a realistic world.
• It enables user to explore places.
• Through Virtual Reality user can experiment with
an artificial environment.
• Virtual Reality make the education more easily
and
comfort.
Disadvantages
• The equipment's used in virtual reality are very expensive.
• It consists of complex technology.
• In virtual reality environment we can't move by our own like
in
the real world.

18. References
1. "Get Ready to Hear a Lot More About 'XR'". Wired. 1 May 2019. ISSN 1059-1028. Retrieved 29
August 2020.
2. ^ Jump up to:a b "virtual | Search Online Etymology Dictionary". www.etymonline.com.
3. ^ Antonin Artaud, The Theatre and its Double Trans. Mary Caroline Richards. (New York: Grove
Weidenfeld, 1958).
4. ^ Faisal, Aldo (2017). "Computer science: Visionary of virtual reality". Nature. 551 (7680): 298–
299. Bibcode:2017Natur.551..298F. doi:10.1038/551298a.
5. "Definition of cyberspace | Dictionary.com". www.dictionary.com