From the Columbia Center for New Media Teaching and Learning website (archived):
Introduction
QuickTime Virtual Reality (QTVR) is a photorealistic cross-platform virtual reality technology, that makes it possible for you to you view a scene or a three-dimensional object from a variety of angles. There are three types of QTVR media: photographic panorama VR, object VR and scenes.
NB: This Apple product was discontinued in the late 2000s.
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