--- title: "What is virtual reality (VR)? A practical guide for teams" description: "How VR works, what it feels like inside an enclosed headset, where it is used in training and healthcare, and its limits, in plain language from PTR." canonical: https://peopletechrevolution.com/learn/xr/what-is-virtual-reality --- [Learn](https://peopletechrevolution.com/learn) # What is virtual reality? Put on an enclosed headset and the room you are standing in disappears. What replaces it is a computer-made space in three dimensions that answers your head and body as you move, so looking around it works the way looking around a real room does. A fitting scenario for practising headset setup. ## The room is replaced, on purpose Everything a wearer sees and hears comes from the headset. That total replacement is what makes VR well suited to rehearsing high-pressure or high-risk situations safely and repeatedly. It is the wrong tool when people need to keep watching their real surroundings. ## How virtual reality works in practice The illusion holds because several pieces of hardware agree with each other, many times a second, about where the wearer's head is. The headset. An enclosed head-mounted display with high-resolution screens and lenses that focus them for human eyes, giving a wide field of view, typically between 90 and 110 degrees. Positional and rotational tracking. Three degrees of freedom tracks head rotation from a fixed point; six degrees of freedom also tracks walking, stepping, ducking and leaning through the space. Inside-out tracking. Modern standalone headsets use outward-facing cameras and computer vision to track their position in the room, with no external base stations. Controllers and hand tracking. Wireless controllers with buttons and sensors, or bare-hand tracking from the headset cameras, for handling virtual objects. Haptic feedback. Precision vibration motors in the controllers give a tactile response when a virtual control is touched or activated. Spatial audio. Speakers or headphones place each sound at the distance and direction it comes from in the simulation. ### Two kinds of headset Standalone devices carry their own processor and battery and run without cables; PC-tethered headsets connect to a high-performance computer for graphically intensive engineering or scientific visualisation. Hand tracking on a standalone headset, outdoors. ### Standalone or tethered A standalone headset is the one most training programs run on: it goes where the learner is, and a facilitator can carry a case of them. A tethered headset stays at a desk beside the computer that drives it. It earns its place when the model on screen is too heavy for a headset to handle alone. ## What it feels like to use VR The word for what happens next is presence: the point where a person stops watching a place and starts being in it. Your own hands, which is where presence starts. ### Objects at their real size, at a believable depth Because the display answers every small head movement, objects read at 1:1 physical scale. Refresh rates of 90 to 120 frames per second and low latency, the delay between moving and the screen updating, keep the movement comfortable. Headsets also adjust for interpupillary distance, the gap between the centres of the pupils, to keep the image clear and reduce eye fatigue. ## Where virtual reality is commonly used VR earns its place when the real version of the activity is hard, costly or dangerous to arrange. High-risk and safety training. Emergency evacuations, firefighting, working at heights, electrical isolation and hazard identification, with mistakes made safely and without damage. Healthcare and clinical education. Surgical rehearsal, anatomy, equipment training and communication practice, repeated until the procedure is familiar. Higher education and vocational learning. Virtual laboratories, engineering machinery and historical reconstructions for hands-on exercises that would otherwise cost too much. Design review and spatial walkthroughs. Architects, planners and industrial designers walk a full-scale plan or assembly before anything is built. ### The same uses from inside the headset Reaching for a component, hesitating at a door, and a first-time user lifting both hands: what any of the uses above looks like from the wearer's own eyes. Reaching for something that is not there. The hesitation before the knock. A first-time VR user lifts both hands. ## Virtual reality in practice at PTR PTR's own VR work concentrates on communication and behaviour change: the conversations people find hardest, rehearsed in the rooms they happen in. A facilitator guides a nurse in the corridor. ### Mater Education, Speaking with Good Judgement Mater Education, part of the Mater hospital group in Queensland, worked with PTR to bring its staff communication program into a branched VR recreation of real Mater environments. It was delivered face to face to more than 60 staff. Mater's own [program evaluation](https://peopletechrevolution.com/uploads/docs/people-tech-revolution-mater-immersive-learning-pilot-case-study.pdf) reported that 93% of participants enjoyed the experience and 96% wanted more VR-based learning in future programs. [Full case study](https://peopletechrevolution.com/work/case-studies/mater-speaking-with-good-judgement) [Download the Mater case study PDF](https://peopletechrevolution.com/uploads/docs/people-tech-revolution-mater-immersive-learning-pilot-case-study.pdf) A beachside session with a facilitator alongside. ### Central Coast, Mayo Clinic and Google Central Coast Council took a similar approach for a different goal: a first-person VR experience giving people the perspective of someone with a disability in a beach and a shopping centre, used more than 200 times across community, teacher-training and CSIRO-facilitated sessions. PTR's own VR programs report measured outcomes: [Mayo Clinic's "A Day In a Lifetime"](https://peopletechrevolution.com/work/case-studies/mayo-clinic-a-day-in-a-lifetime), built by People Tech Revolution and evaluated across two peer-reviewed papers, and the [Google CHI 2024 VR DEI training](https://peopletechrevolution.com/work/research-evidence/vr-dei-training-google-chi-2024), led by PTR co-founder Leonie Sanderson, built with Equal Reality, a subsidiary of People Tech Revolution, and published as an academic case study. ## What virtual reality is not What VR gets mistaken for, and the difference in each case. VR is not simply 360 video. 360 video lets a user look around from one fixed camera point, but it is pre-recorded and non-interactive. True VR creates an interactive 3D environment in real time, so a user can walk through it and handle objects. 360 still has a deliberate place: it runs in an ordinary browser on any device, so it is often the easiest first taste of immersion. PTR's own live 360 experience on [PTR Labs](https://labs.peopletechrevolution.com/) works exactly that way: drag, or move your phone, and look around a real place with no headset. VR is not augmented reality. VR replaces the real world with a virtual one. AR keeps the physical room visible and places digital information on top of real objects. VR does not inevitably cause nausea. Early devices caused discomfort through display lag and low frame rates. High refresh rates, low-latency tracking and well-designed movement have reduced it for most users, and peer-reviewed research on cybersickness going back to 2000 sets out both the causes and the ways to reduce it. VR training is not equally effective for every skill. A 2025 peer-reviewed meta-analysis of VR in teacher education found a moderate overall effect that varied a great deal by what was taught: strongest for content knowledge and social skills, smaller for purely procedural or reflective tasks, and stronger on head-mounted displays than on desktop VR. VR suits some training goals more than others; it is not a uniform upgrade. ## Is virtual reality the right fit? A headset is a cost and a constraint as well as a capability. These are the conditions that settle it. A strong fit when The physical environment is hazardous or costly. Complete visual and spatial focus is needed. True physical scale matters: a building, a vehicle or an anatomical structure at 1:1. A difficult conversation or behaviour needs safe, repeatable rehearsal, as in the Mater and Mayo Clinic examples above. Not the right fit when There is no clear, safe physical area, since the wearer cannot see the real room. Headsets are shared and a minority of users still feel discomfort. The task needs real tools, real colleagues or the real environment in view, where AR or MR serve better. The content is used rarely or changes often, where a simpler format is more practical. ## The short version What replacing the room buys you, and what it costs. A learner weighs a choice between blocks. ### Total replacement, for better and worse VR replaces what you see and hear with a fully simulated environment, viewed through an enclosed headset. That total replacement is what makes it well suited to rehearsing high-pressure or high-risk situations safely and repeatedly. It is unsuitable for tasks where people need to stay aware of their real surroundings. [See how virtual reality environments are designed and applied on the XR overview →](https://peopletechrevolution.com/xr) Still have a question about virtual reality? Ask our CEO Simon Lowe’s Digital Twin a question [Open the contact form](https://peopletechrevolution.com/learn/xr/what-is-virtual-reality#contact) Related PTR work and further reading [What is XR? The umbrella term, and where VR, AR and MR sit under it.](https://peopletechrevolution.com/learn/xr/what-is-xr) [What is augmented reality? Digital content over the real world, on a phone or through glasses.](https://peopletechrevolution.com/learn/xr/what-is-augmented-reality) [What is mixed reality? Digital objects anchored in the real room, and responding to it.](https://peopletechrevolution.com/learn/xr/what-is-mixed-reality) [VR vs AR vs MR. The three side by side: what each replaces, keeps or adds.](https://peopletechrevolution.com/learn/xr/vr-vs-ar-vs-mr) ## Sources and further reading Research on the reality-virtuality continuum, VR teacher education and cybersickness. ### A Taxonomy of Mixed Reality Visual Displays Paul Milgram and Fumio Kishino · 1994 IEICE Transactions on Information and Systems. The continuum that puts VR at the fully virtual end. [Read it at globals.ieice.org](https://globals.ieice.org/en_transactions/information/10.1587/e77-d_12_1321/_p) ### Using virtual reality for teacher education: a systematic review and meta-analysis Han, Luo, Wang and Zhang · Frontiers in Virtual Reality · 2025 The meta-analysis behind the effectiveness note above. [Read it at frontiersin.org](https://www.frontiersin.org/journals/virtual-reality/articles/10.3389/frvir.2025.1620905/full) ### A Discussion of Cybersickness in Virtual Environments Joseph J. LaViola Jr. · 2000 ACM SIGCHI Bulletin. The causes and mitigations referred to in the comfort note above. [Read it at dl.acm.org](https://dl.acm.org/doi/10.1145/333329.333344)