This section is for beginners who haven't worked with VR headsets or Leap Motion yet. A VR headset is a head-mounted display, in which we can put a smartphone, or which has a built-in display that can be connected to HDMI or some other display port. A VR headset can create a virtual 3D environment by mimicking human vision, that is, stereo vision.

Human vision works like this: we have two eyes and get two separate and slightly different images in each eye. The brain then combines these two images and generates a 3D image of the surroundings. Similarly, VR headsets have two lenses and a display. The display can be inbuilt or a smartphone. This screen will show a separate view of the left and right images, and when we put the smartphone or built-in display into the headset, it will focus and reshape using two lenses and will...