Virtual reality

Virtual reality (VR) is an interactive computer-generated experience taking place within a simulated environment, that incorporates mainly auditory and visual, but also other types of sensory feedback like haptic. This immersive environment can be similar to the real world or it can be fantastical, creating an experience that is not possible in ordinary physical reality. Augmented reality systems may also be considered a form of VR that layers virtual information over a live camera feed into a headset or through a smartphone or tablet device giving the user the ability to view three-dimensional images.
 

Virtual Reality Is Here

Virtual Reality is a fascinating way to travel using nothing more than the power of technology. With a headset and motion tracking, VR lets you look around a virtual space as if you're actually there. It's also been a promising technology for decades that's never truly caught on. That's changing with the current wave of VR products.
Oculus has the popular Rift, HTC and Valve have the Steam-friendly Vive, Sony leads the pack with the excellent PlayStation VR, Samsung recently added a separate controller to its Gear VR, and Google's Daydream is steadily growing from the remains of Google Cardboard. Meanwhile, Microsoft's Windows 10 mixed reality platform and a variety of hardware manufacturers working on it are slowly creeping into the market with their own unified platform. Then there are the new standalone headsets, like the Oculus Go, the Lenovo Mirage Solo, and the upcoming HTC Vive Focus.
 
The Big Question: What Type of VR?

Modern VR headsets fit under one of two categories: Mobile or tethered. Mobile headsets are shells with lenses into which you place your smartphone. The lenses separate the screen into two images for your eyes, turning your smartphone into a VR device. Mobile headsets like the Samsung Gear VR and the Google Daydream View are relatively inexpensive at around $100, and because all of the processing is done on your phone, you don't need to connect any wires to the headset.
You can't count on accurate position tracking with mobile headsets. Most use three-degrees-of-freedom (3DOF) motion tracking, which means they can follow the direction you're facing very accurately, but can't tell if you're moving forward, backward, up, down, left, or right. To accurately track your position, you need a headset with six-degrees-of-freedom (6DOF) motion tracking. All tethered headsets have this thanks to either external sensors or outward-facing cameras.

But if to be more exact, it’s a virtual reality head-mounted display.
What it means is you put a helmet-like headset over your head, and
without warning, you’re in a whole different virtual world.

A lot of companies already are convinced, that Oculus Rift (VR) is the
future of many different industries. But we’ll talk about it later.