Today, I learned a basic of how VR works and want to share you my short summary: VR feel can be achieved by using head mounted displays to show different 2D pictures (different angles, depth) to each of a user' eyes to immerse the feeling of staying in a 3D world to the user. The immersion can be increased by increasing the field of view (typical field of view is 100 to 110 degree). FPS requires at least 60fps for the user to feel okay. Different trackings such as head tracking, motion tracking, and eye tracking decide when to show which pictures provide more complete VR experience. After learning this basic, I am interested in making some experiments with VR application for Android phones and tablets. I will share those learning experience after the experiments. References: http://www.androidauthority.com/virtual-reality-work-702049/ https://www.wareable.com/vr/how-does-vr-work-explained