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• Interactivity element: For a better VR experience we need to interact with the content as if it were real.
The VR bodysuit translates every movement of the body to the VR environment which is then reflected in the
VR environment.

Application areas of virtual reality
Some of the areas where virtual reality is used are as follows:
• Virtual reality is extensively used in the field of entertainment like
gaming and movies.
• VR medical training helps medical students practice surgical
operations in a virtual environment.
• In academic subjects like History and Geography, VR can be used
to take students on a journey back through time or place and
develop their interest in the subject.
• VR-enabled flight simulators are used for commercial, military
and space training.

• Using the VR we can virtually go on virtual trips to any place around the world, with zero travel cost.

Definition

Merriam-Webster defines AR as “an enhanced version of reality created by the use of technology to overlay digital
information on an image of something being viewed through a device (as a smartphone camera).”

13.1.4 Augmented Reality
Unlike virtual reality, Augmented Reality (AR) allows us to see the real world
with an added virtual layer on top of it. So, we could say that AR enhances the
user’s physical environment with real-time relevant digital content. In simple
words, AR technology places virtual objects in the real world.

The Pokemon Go game released in 2016 is a very popular AR mobile gaming
app. In this game, the digital 3D image of an animated character Pokemon is
superimposed onto our real surroundings. If we open the app on our mobile
phones, it buzzes when it finds a Pokemon nearby and once the user captures
it, the user scores a point.
AR devices can be of the following types:
• Head-up display (HUD): It is a transparent display projected at eye level of the user such that the user (driver) can
access the information without having to look down at a conventional display panel.
• Smartglasses: Smartglasses like Google glass, Microsoft HoloLens 2, Everysight Raptor AR Smartglasses use AR
technology. The real view is first captured on camera, then mounted on the display which is combined with
computer-generated graphics giving us the ultimate AR experience.
• Handheld AR: Mobile devices like smartphones or tablets with the AR app installed also use AR technology.
• Holographic display: It uses the light diffraction concept to generate 3D objects in the real world.

Applications of Augmented Reality
Some of the applications of augmented reality are as follows:
• AR apps like DecorateAR and Dulux Visualiser, are used for planning home decoration ideas by virtually trying
different wall colours and textures for furniture, painting, etc.
• Medical imaging uses AR which helps surgeons, neurologists or chemotherapists in their diagnosis.

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