Building an Instant Giant Tetrahedron
The Math Museum builds an Instant Giant Tetrahedron at a science street fair in Washington Square Park in Manhattan, NY.
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geometry
Instant Giant Tetrahedron
Continuing a Math Mondays tradition of building Sierpinski triangles and tetrahedra out of various materials, today we’re going to do it with mailing tubes. The basic unit requires six identical mailing tubes and a piece of cord or twine about 8.5 times as long as the tubes.
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Math Monday: Know Your Truncated Icosahedron
Today’s column is devoted to truncated icosahedron constructions and the nerds who love.
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CNC Milling a Mobius strip
This video shows the manufacture of one of three 2011 MobiPrize awards, designed by a firm called rvtr. The MobiPrize “recognizes enterprises that demonstrate innovative and replicable solutions to local and global transportation challenges.” The award itself features a prominent Mobius strip motif, which is machined out of a piece of recycled aluminum on a 5-axis mill.
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Math Monday: Hula Hoop Geometry, Part II
Playing around with mathematics using the ubiquitous hula hoop.
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Math Monday: Hula Hoop Geometry
Playing around with mathematics using the ubiquitous hula hoop.
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Topology Tuesday: Klein’s Quartic
If you are looking for a subject likely to inflame the hearts of mathematicians, make them slightly weak in the knees, and induce some distinctly poetical sentiments, Klein’s Quartic, first described by German mathematician Felix Klein in 1878, seems like a pretty good bet. Though the surface itself, per Wikipedia, “does not have a (non-trivial) 3-dimensional linear representation,” several prominent math-bloggers have produced models, projections, and plain-language written explanations attempting – and doing a pretty good job of it, IMHO – to communicate their passion for the construct…
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