← Return to XR: Extended RealityTopicFoundationsCore theory, history, and the conceptual framework of XR — the Reality-Virtuality Continuum, presence, immersion, and key milestones.Contribute✦3Entries3Published0StubsPublished EntriesHHistory of Extended RealityMay 2, 2026PPresence and ImmersionMay 2, 2026RReality-Virtuality ContinuumMay 2, 2026