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Picture what it would be like to roll a bowling ball onto the two-dimensional surface of a trampoline.
NPR: Einstein: Relatively Speaking, a Complicated Life
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It recommended using geometric lines of latitude and longitude to convey a three-dimensional Earth on a two-dimensional surface, and it included the co-ordinates of over 8, 000 locations in the ancient world.
ECONOMIST: There is no such thing as an objective map
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Whether the simplified shape is a sphere or a torus is determined by the behaviour of one-dimensional curves on its surface.
ECONOMIST: Proof of the truth of the Poincar�� conjecture
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Also, imagers on board both the lander and the rover have sent back panoramic views of the Martian surface, including three-dimensional images unveiled at a press conference Friday -- during which scientists and reporters donned cheap, decidedly low-tech plastic glasses to get the full effect.
CNN: NASA says Pathfinder already has met objectives
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Also, the intricate polarized pattern, which sparkles under the sleek surface, creates a three-dimensional illusion that is eye-catching and exquisitely reminiscent of a jewel.
ENGADGET: LG launches Optimus G flagship smartphone: quad-core S4 Pro, LTE, 2GB RAM, ICS, 13MP camera (updated)