Virtual reality (VR) is a technology that creates immersive and interactive simulations of real or imagined environments. VR can be used for various purposes, such as entertainment, education, training, therapy, and more. VR can also enhance the user's sense of presence, agency, and empathy in the virtual world.

To experience VR, you need a device that can display stereoscopic images and track your head movements, such as a VR headset or a smartphone with a VR viewer. You also need software that can render the virtual environment and respond to your inputs. Some VR applications may also use additional accessories, such as controllers, gloves, or treadmills, to increase the realism and interactivity of the simulation.

VR is not a new concept, but it has gained popularity and accessibility in recent years due to the advances in hardware, software, and content development. VR is now widely used in various domains, such as gaming, education, health care, tourism, art, and social media. VR can also create new opportunities and challenges for users, developers, and researchers in terms of ethics, privacy, accessibility, and design.