What is VR and how does it work?	Virtual reality is defined as a seemingly real computer-generated simulation of a 3D image or environment that can be interacted with using special equipment. Today, 78% of Americans are familiar with using VR technology and there are 171 million users worldwide. Virtual reality was first invented in 1968 by Ivan Sutherland and has advanced greatly since then. Basically, it uses proprioception (awareness of the position of the body) and how the eyes and head move to trick the brain into thinking it’s somewhere else. It uses eye, head, and motion tracking to allow the full virtual experience.
Advantages and Disadvantages:	In addition to enhancing gaming experience, virtual reality can be used in a variety of fields such as sports, fashion, mental health treatment, and in the business world. Virtual reality can also be used to train medical professionals on surgeries and procedures without real life consequences. In addition, VR can also be used to transport a trainee in many situations and environments for training. Some disadvantages of virtual reality are the addiction and health effects. Users can easily become addicted to the virtual world because of its amazing effects and quality, and especially when gaming online with other users. Some possible health effects on the VR are the loss of spatial awareness, dizziness, nausea, and disorientation. One common effect is motion sickness because your body sees the movement being created on the screen, but does not feel them.
Ways it's changing the world!	There are many ways virtual reality is changing the world for the better. First of all, Virtual Reality helps with high risk job training, studies show that many people benefit from doing and experiencing rather than just learning about. Also, VR can be useful in virtual shopping. The users can virtually try on an item or place it virtually in their homes without actually owning the item or having it with them. Finally, virtual reality can aid medical trainees in helping them train for procedures in a no risk environment. It is important they know their skills before actually putting them to the test, instead of unknowingly being unprepared and putting a patient at risk. In conclusion, virtual reality is helping the world every day with its many extremely useful capabilities.