A spherical panorama is a photographic representation of the full 360-degree field of vision. Using a special camera apparatus and a photo-stitching technique, an array of photos taken from a single point of observation are seamlessly mapped across the surface of a sphere or cube surrounding the viewer.

The photo above is really just a flattened cylindrical panorama, because it's just as hard to convey a spherical panorama in one illustration as it is to show a map of the globe on a flat piece of paper.
Using a special plugin from QuickTime (resident on a Mac, and downloadable for other computers), you can control your direction of view, and in some cases, you can zoom closer to any given region of the picture.
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A good place to start is the website “spherical panoramas” Link.
You can also find various images on “Fullscreen Quicktime Virtual Reality” Link.
Quicktime site: link.
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