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Everyone: Computers, Science, Technology - Upcoming
4D torus fly-through cross-section Poster from Zazzle.com
http://www.zazzle.com/4d_torus_fly_through_cross_section_pri...
Submitted by mike40033
2 months, 2 days, 12 hours ago
This poster shows a series of (three-dimensional) cross-sections of a four-dimensional torus.
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Puzzle - can you make 16 with these digits
http://www.zazzle.com/can_you_make_16_using_the_digits_2_cus...
Submitted by mike40033
2 months, 2 days, 13 hours ago
This tee shirt has a puzzle on the back - can you make the number 16, using the digits 2, 3, 5 and 8 once each, and only the operations plus, minus, divide and times. Beware, although the puzzle can be solved, it's really really tough!
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