Just-noticeable differenceIn the branch of experimental psychology focused on sense, sensation, and perception, which is called psychophysics, a just-noticeable difference or JND is the amount something must be changed in order for a difference to be noticeable, detectable at least half the time. This limen is also known as the difference limen, difference threshold, or least perceptible difference.
Lift (force)A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it is defined to act perpendicular to the flow and therefore can act in any direction. If the surrounding fluid is air, the force is called an aerodynamic force.
PlayStation Moveis a motion game controller developed by Sony Interactive Entertainment. Initially released in 2010 for use with the PlayStation 3 home video game console, its compatibility was later expanded to its successor, the PlayStation 4 in 2013, its PlayStation VR platform in 2016 and the PlayStation 5 in 2020 (2nd generation CECH-ZCM2 with microUSB is not backwards-compatible with PS3). Conceptually similar to Nintendo's Wii Remote and Microsoft's Kinect, its function is based around controller input in games stemming from the actual physical movement of the player.
TelepresenceTelepresence refers to a set of technologies which allow a person to feel as if they were present, to give the appearance or effect of being present via telerobotics, at a place other than their true location. Telepresence requires that the users' senses interact with specific stimuli in order to provide the feeling of being in that other location. Additionally, users may be given the ability to affect the remote location. In this case, the user's position, movements, actions, voice, etc.
