The dark, narrow windows that punctuate the facade of Paul Rood Hall at Western Michigan University in Kalamazoo appear randomly distributed. They also make the facade resemble an IBM punch card. Perhaps these windows are not randomly placed but encode a secret message.
Built in 1971, Rood Hall houses classrooms, laboratories, a geology museum, a computer center, and a particle accelerator facility.
Symbols for the square root of pi are among the adornments on a stainless steel trash container, Euclid Corridor, Cleveland, 2011. "Visual trash" artwork, inspired by a bad computer printout, by Mark Howard.
Ivars Peterson is a freelance writer and editor. He was Director of Publications at the Mathematical Association of America from 2007 to 2014. As an award-winning mathematics writer, he previously worked at Science News for more than 25 years and served as editor of Science News Online and Science News for Kids. His books include The Mathematical Tourist, Islands of Truth, Newton's Clock, and Fragments of Infinity: A Kaleidoscope of Math and Art.