The Math Forum @ Drexel University. 2011 MAA Found Math Gallery. Geometreks in Boston. Boston skyline as seen from Cambridge, Mass., across the Charles River. The tallest building in the photo is the Prudential Tower at 800 Boylston Street. The skyscraper to its left is 111 Huntington Avenue, sometimes called the "R2-D2" building. Boston will host the Joint Mathematics Meetings (JMM) on January 4-7, 2012, bringing more than 5,000 mathematicians to the city. "In my younger days, having once some leisure which I still think I might have employed more usefully, I had amused myself in making . . . magic squares," Franklin wrote in a letter more than 200 years ago.
The Ayer Mansion at 395 Commonwealth Avenue, for example, features a wonderful array of colorful mosaics and stained-glass windows designed by Louis Comfort Tiffany, who often drew inspiration from Moorish and Islamic art. Conceptual artist Sol LeWitt is represented by a colorful, geometric wall drawing (#1128) visible from the street at 100 Cambridge. Topological III by Robert R. Photos by I. Mathematical Treasures. NumberADay. Math Monday: An Octahedron in a Balloon. By George Hart for the Museum of Mathematics You may know how to make a ship in a bottle, but how would you make this octahedron in a balloon?
The twelve edges of the octahedron are made of strips of blue balloon rubber, glued to the inside of the clear balloon at the six vertices. Think of how you might make this before reading my solution below. I did it by first making a spherical octahedron on the outside of the balloon. It is glued with rubber cement at the six cardinal points: top, bottom, left, right, front, back. Then I untied the slip knot to let the air out of the balloon, carefully turned it inside out, and reinflated it. If you master this technique, the next step is to try to make a nice cube. More: See all of George Hart’s Math Monday columns Gareth Branwyn Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. Related. MAA MinuteMath. Porn Folder.