http://www.maa.org/mathtourist/mathtourist.html Ivar's Peterson's Math Tourist. A weekly column featured on MAA Online. Popular expository articles covering a variety of subjects, and drawing on mathematical topics such as number theory, geometry, combinatorics,games, probability, and more. en-us Copyright 2008 Mathematical Association of America webmaster@maa.org http://www.rssboard.org/rss-specification Fri, 02 Jul 2010 18:38:34 GMT http://www.maa.org/style/online_logos/Icosahedron_blue_large_r.gif http://www.maa.org Galileo's Vision is a new outdoor sculpture on the campus of Missouri Western State University in St. Joseph. http://mathtourist.blogspot.com/2011/03/galileos-vision-in-missouri.html Mon, 7 Mar 2011 16:16:34 GMT From one viewpoint, the sculpture looks like an ellipse with a thick rim. In reality, it is a tilted, circular ring, 19 feet across. More than that, it ingeniously tracks the sun, casting distinctive shadows at different times of the year. http://mathtourist.blogspot.com/2011/02/annual-ring.html Wed, 2 Mar 2011 16:16:34 GMT The plaza in front of the Lawrence Hall of Science in Berkeley, Calif., features not only a model of a fin whale, which attracts clamberers of all ages, but also something more mundane—a fountain that simply spouts water into the air. Nonetheless, on a windy day, the fountain can produce an intriguing splash pattern (below) that is well worth pondering. http://mathtourist.blogspot.com/2011/02/fountain-wind-and-splash-pattern.html Wed, 24 Feb 2011 17:00:34 GMT Perched high on the steep slopes of a hill overlooking Berkeley, Calif., the Mathematical Sciences Research Institute (MSRI) has a spectacular site, with a view across the bay to the Golden Gate Bridge and beyond. http://mathtourist.blogspot.com/2011/02/tessellation-tango.html Tues, 23 Feb 2011 16:00:34 GMT Penny Bias http://mathtourist.blogspot.com/2011/02/penny-bias.html Tues, 8 Feb 2011 14:00:34 GMT Words with a Twist http://mathtourist.blogspot.com/2011/01/words-with-twist.html Mon, 10 Jan 2011 18:38:34 GMT New posts by The Mathematical Tourist http://maa.org/mathtourist/mathtourist.html Fri, 02 Jul 2010 18:38:34 GMT Knotted Staircase http://www.maa.org/mathtourist/mathtourist_03_31_10.html Fri, 02 Apr 2010 20:35:33 GMT Deciphering Integer Sequences http://www.maa.org/mathtourist/mathtourist_03_10_10.html Fri, 12 Mar 2010 18:39:19 GMT Random Bias http://www.maa.org/mathtourist/mathtourist_11_08_09.html Mon, 09 Nov 2009 15:38:22 GMT Cosmic Reflection http://www.maa.org/mathtourist/mathtourist_11_03_09.html Wed, 04 Nov 2009 15:25:49 GMT Drilling a Square Hole http://www.maa.org/mathtourist/mathtourist_08_31_09.html Mon, 31 Aug 2009 19:33:17 GMT High School Musical and Formulas for Pi http://www.maa.org/mathtourist/mathtourist_07_30_09.html Thu, 30 Jul 2009 15:35:41 GMT St. Louis Parabolas http://www.maa.org/mathtourist/mathtourist_07_13_09.html Mon, 13 Jul 2009 20:13:01 GMT From Hexagon to Square http://www.maa.org/mathtourist/mathtourist_06_18_09.html Thu, 18 Jun 2009 17:55:09 GMT The Ladies' Diary http://www.maa.org/mathtourist/mathtourist_03_26_09.html Thu, 26 Mar 2009 16:15:01 GMT Rock-Paper-Scissors for Winners http://www.maa.org/mathtourist/mathtourist_03_12_09.html Thu, 12 Mar 2009 20:34:35 GMT The Remarkable Miss Mullikin http://www.maa.org/mathtourist/mathtourist_02_20_09.html Fri, 20 Feb 2009 16:10:11 GMT Pondering an Artist's Perplexing Tribute to the Pythagorean Theorem http://www.maa.org/mathtourist/mathtourist_02_02_09.html Mon, 02 Feb 2009 14:56:55 GMT Overhang http://www.maa.org/mathtourist/mathtourist_01_28_09.html Wed, 28 Jan 2009 19:10:11 GMT Statistical Wear http://www.maa.org/mathtourist/mathtourist_01_02_09.html Fri, 02 Jan 2009 20:41:12 GMT Mathematical LIFE in Photos http://www.maa.org/mathtourist/mathtourist_11_19_08.html Wed, 19 Nov 2008 20:46:27 GMT Problems with Slipping Ladders http://www.maa.org/mathtourist/mathtourist_11_11_08.html Tue, 11 Nov 2008 16:41:37 GMT Improved Pancake Sorting http://www.maa.org/mathtourist/mathtourist_10_9_08.html Thu, 09 Oct 2008 15:18:11 GMT A Fractal in Bach's Cello Suite http://www.maa.org/mathtourist/mathtourist_9_3_08.html Thu, 04 Sep 2008 15:54:14 GMT A New Formula for Generating Primes http://www.maa.org/mathtourist/mathtourist_8_8_08.html Fri, 08 Aug 2008 17:13:24 GMT A Tetrix at Burning Man http://www.maa.org/mathtourist/mathtourist_7_14_08.html Mon, 14 Jul 2008 18:43:21 GMT Unveiling the Enigma Machine http://www.maa.org/mathtourist/mathtourist_5_30_2008.html Fri, 30 May 2008 15:22:01 GMT The Most Marvelous Theorem http://www.maa.org/mathtourist/mathtourist_5_9_2008.html Fri, 09 May 2008 15:08:53 GMT Newton's Algebra Book http://www.maa.org/mathtourist/mathtourist_3_11_2008.html Tue, 11 Mar 2008 18:27:45 GMT Stooges Statistics http://www.maa.org/mathtourist/mathtourist_2_14_2008.html Thu, 14 Feb 2008 19:40:59 GMT Random Walks to Football Rankings http://www.maa.org/mathtourist/mathtourist_11_15_07.html Tue, 20 Nov 2007 14:22:19 GMT Triangular Numbers and Magic Squares http://www.maa.org/mathtourist/mathtourist_11_7_07.html Thu, 08 Nov 2007 16:31:59 GMT Optimal Fetching http://www.maa.org/mathtourist/mathtourist_10_31_07.html Thu, 01 Nov 2007 13:44:30 GMT Norwegian Sol http://www.maa.org/mathtourist/mathtourist_10_18_07.html Thu, 18 Oct 2007 15:01:00 GMT Folding a Klein Bottle http://www.maa.org/mathtourist/mathtourist_09_21_07.html Wed, 17 Oct 2007 16:37:29 GMT A CMJ Hit Parade http://www.maa.org/mathtourist/mathtourist_09_12_07.html Wed, 17 Oct 2007 16:37:02 GMT Rectangular States and Kinky Borders http://www.maa.org/mathtourist/mathtourist_08_30_07.html Wed, 17 Oct 2007 16:36:35 GMT The Number Pad Game http://www.maa.org/mathtourist/mathtourist_08_23_07.html Wed, 17 Oct 2007 16:36:11 GMT Symmetries of Beaded Beads http://www.maa.org/mathtourist/mathtourist_08_16_07.html Wed, 17 Oct 2007 16:34:32 GMT Tom Lehrer's Derivative Ditties http://www.maa.org/mathtourist/mathtourist_07_19_07.html Wed, 17 Oct 2007 16:34:01 GMT Binary Frieze http://www.maa.org/mathtourist/mathtourist_07_06_07.html Wed, 17 Oct 2007 16:33:31 GMT Wrapping a Perfect Sphere http://www.maa.org/mathtourist/mathtourist_06_28_07.html Wed, 17 Oct 2007 16:33:08 GMT Math Mag's Greatest Hits http://www.maa.org/mathtourist/mathtourist_06_08_07.html Wed, 17 Oct 2007 16:32:39 GMT Unwrapping Curves http://www.maa.org/mathtourist/mathtourist_06_04_07.html Wed, 17 Oct 2007 16:26:07 GMT