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Greg Johns
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Just relaized that @Snuffleupagus must be a direct decendant of the wooly mammoth

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Very staireable
The hyperboloid is a surface of revolution, actually its shape resembles that of cooling towers in thermoelectric power plants. The hyperboloid can be obtained in several ways, one of which is the rotation of an inclined straight segment as shown in the figure above. The right frame shows a generatrix of the obtained surface. Looks like the stick passes through thanks to some kind of magic, yet it’s pure math.
http://en.wikipedia.org/wiki/Hyperboloid

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Great talk

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Mars Panorama - NASA’s Curiosity Mars Rover selfie: Martian night
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