Emerging Media: Tangible Computing, Virtual Reality, and Augmented Reality

Vocabulary practice flashcards covering Tangible User Interfaces, Virtual Reality, Augmented Reality, design ergonomics, tracking mechanics, and historical milestones.

Ubiquitous Computing

A computing paradigm coined by Mark Weiser (1991) describing scenarios where computers fade into the background and weave themselves into everyday life, remaining invisible yet constantly providing information and embedded intelligence in physical objects.

Tangible Computing

A field of computing concerned with physical objects that can be perceived by touch and interfaced directly with computers, while aiming to integrate all five primary human senses: sight, hearing, taste, smell, and touch.

iSmell

A peripheral device introduced in 1999 by Digiscent designed to emit scents matched to visited websites using a cartridge of $128$ primary odors; it attracted $20\text{ million dollars}$ in investment but was never commercially released.

GameScent

An AI-powered peripheral introduced in 2024 that releases real-time physical scents (such as gunfire, explosions, racing cars, storms, and a clear air reset scent) in response to game events.

Tangible Bits

A vision articulated by Hiroshi Ishii and Nicholas Negroponte (1997) at the MIT Media Lab aimed at seamlessly coupling bits and atoms by giving dynamic physical, manipulable form to digital data and computation.

Radical Atoms

A design vision established in 2012 by Hiroshi Ishii's Tangible Media Group proposing dynamic physical materials that can alter their shape and surface appearance in real time, becoming as computationally reconfigurable as display pixels.

Graphical User Interface (GUI)

An interface paradigm in which intangible screen pixels (windows, icons, and menus) are manipulated indirectly via separate physical remote controllers such as a mouse, keyboard, or trackpad.

Tangible User Interface (TUI)

An interface system that directly couples physical tangible objects with digital computation, enabling direct hand-based manipulation of data by merging physical representations with intangible digital feedback.

aSpire

A clippable, mobile pneumatic-haptic wearable device developed by the MIT Media Lab and Hyundai Motor Company to regulate user breathing rates via personalizable tactile feedback.

FibeRobo

A shape-shifting, responsive liquid crystal elastomer (LCE) fiber technology developed at MIT in 2023 that can be digitally knitted into interactive textiles that react physically to environmental conditions and sensor inputs.

Virtual Reality (VR)

A fully simulated, immersive digital environment presented through an enclosed head-mounted display that isolates users visually from the physical world using real-time audio, visual, and haptic feedback.

Sensorama

A multi-sensory mechanical simulator created by Morton Heilig in the late 1950s and patented by Sensorama, Inc., regarded as a primary precursor to VR due to its integration of 3D stereoscopic wide-vision visuals, stereo audio, vibrations, wind, and ambient aromas.

Mixed Reality (MR)

An interactive medium where real and virtual objects co-exist simultaneously, seamlessly anchoring responsive holographic digital elements into the user's physical environment rather than confining them to a completely enclosed digital space.

VR Focal Distance Guidelines

Usability rules formulated by Camille Donegan establishing that virtual objects between $0.5\text{ to }2.0,\text{m}$ appear immediately in front of users and must be used sparingly, $3.0,\text{m}$ minimizes eye strain and is optimal, while distances beyond $6.0,\text{m}$ are excessively far.

VR Constant Velocity Principle

A locomotion guideline for VR user experience stating that camera movement must proceed at a smooth, constant velocity without abrupt direction or acceleration changes to avoid inducing simulator sickness.

VR Head-Tracking Latency Threshold

The requirement that motion-to-photon latency in head-mounted displays remain at or below $50,\text{ms}$ without dropping visual frames, preventing noticeable visual lag and motion disorientation.

Three Degrees of Freedom (3DoF)

A tracking mechanism that detects rotational movements strictly around three axes—pitching, yawing, and rolling—relying on integrated accelerometers, gyroscopes, and magnetometers without tracking spatial translation.

Six Degrees of Freedom (6DoF)

An advanced tracking system that measures three rotational axes (pitch, yaw, roll) combined with three translational directions (elevating, strafing, surging), allowing users to physically step through room-scale virtual space.

Inside-Out Tracking

A positional tracking architecture where optical sensors and cameras attached directly to the VR headset track its orientation and handheld controllers relative to the physical room without external beacons.

Outside-In Tracking

A positional tracking system that places stationary external cameras or base stations throughout the physical room to measure the location of markers on the user's headset and controllers.

PowerScene

A 3D virtual terrain simulation software program built by Cambridge Research Associates of McLean, Virginia that integrated satellite imagery and elevation data; it was used by military and political leaders at Wright-Patterson Air Force Base during the 1995 Dayton Peace Accords.

Clouds Over Sidra

A United Nations-commissioned virtual reality documentary directed by Gabo Arora and Chris Milk that illustrates life inside a Syrian refugee camp in Jordan from the perspective of a 12-year-old girl.

Aquaphobia (2017)

An award-winning VR artwork created by Jakob Kudsk Steensen connecting psychological phobia therapy with future sea-level rise, featuring an aquatic entity reciting poetry that narrates a breakup between the landscape and the visitor.

Steve Mann

An inventor recognized as the 'Father of Wearable Computing' who created early mediated-reality headgear in the 1970s and 1980s and founded the MIT Media Lab's Wearable Computing project in 1992.

Augmented Reality (AR)

A real-time technology that blends physical reality with contextual digital computer-generated information, dynamically overlaying graphics, labels, or 3D models onto the real world.

Glasshole

A derogatory term popularized in 2013 describing early Google Glass wearers perceived as entitled, socially oblivious tech consumers with a camera and internet connection mounted to their faces.