Changes

==Existing work==

==Existing work==

===Ivan Sutherland's head-mounted display===

===Ivan Sutherland's head-mounted display===

[[Ivan Sutherland]] and Bob Sproull created a head-mounted display system at Harvard University and the University of Utah. The gadget has see-through optics and displayed simple wireframe graphics, and was held to the ceiling by a mechanical arm which tracked the head movements of the user. This iteration of the technology would prove to be impractical for mass use. Sutherland also postulated the concept of the “Ultimate Display” in the year +1965 and would have a great impact in the VR and AR fields of study <ref name=”1”></ref><ref name=”3”> Hollerer, T. and Schmalstieg, D. (2016). Introduction to Augmented Reality. Retrieved from http://www.informit.com/articles/article.aspx?p=2516729</ref><ref name=”4”> Javornik, A. (2016). The mainstreaming of augmented reality: A brief history. Retrieved from https://hbr.org/2016/10/the-mainstreaming-of-augmented-reality-a-brief-history</ref><ref name=”5”> Virtual Reality Society. History of Virtual Reality. Retrieved from https://www.vrs.org.uk/virtual-reality/history.html</ref><ref name=”6”> van Krevelen, D. W. F. (2007). Augmented Reality: Technologies, applications, and limitations. Retrieved from https://www.researchgate.net/profile/Rick_Van_Krevelen2/publication/292150312_Augmented_Reality_Technologies_Applications_and_Limitations/links/56ab2b4108aed5a01359c113.pdf</ref>.

[[Ivan Sutherland]] and Bob Sproull created a head-mounted display system at Harvard University and the University of Utah. The gadget has see-through optics and displayed simple wireframe graphics, and was held to the ceiling by a mechanical arm which tracked the head movements of the user. This iteration of the technology would prove to be impractical for mass use. Sutherland also postulated the concept of the “Ultimate Display” in the year G1965 and would have a great impact in the VR and AR fields of study <ref name=”1”></ref><ref name=”3”> Hollerer, T. and Schmalstieg, D. (2016). Introduction to Augmented Reality. Retrieved from http://www.informit.com/articles/article.aspx?p=2516729</ref><ref name=”4”> Javornik, A. (2016). The mainstreaming of augmented reality: A brief history. Retrieved from https://hbr.org/2016/10/the-mainstreaming-of-augmented-reality-a-brief-history</ref><ref name=”5”> Virtual Reality Society. History of Virtual Reality. Retrieved from https://www.vrs.org.uk/virtual-reality/history.html</ref><ref name=”6”> van Krevelen, D. W. F. (2007). Augmented Reality: Technologies, applications, and limitations. Retrieved from https://www.researchgate.net/profile/Rick_Van_Krevelen2/publication/292150312_Augmented_Reality_Technologies_Applications_and_Limitations/links/56ab2b4108aed5a01359c113.pdf</ref>.

===Videoplace===

===Videoplace===