Here’s the challenge: see if you can find a way to have five (or more?) cylinders of an aspect ratio at least close to 9.5 : 7 all touch each other simultaneously, and send a picture of the configuration to mondays@momath.org — the first/best solutions will be posted in a future installment.
The Math Museum builds an Instant Giant Tetrahedron at a science street fair in Washington Square Park in Manhattan, NY.
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.
Today’s column is devoted to truncated icosahedron constructions and the nerds who love.
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.
Playing around with mathematics using the ubiquitous hula hoop.
Playing around with mathematics using the ubiquitous hula hoop.
