Post AyiUNIJvX2Ih41rzcm by ddrake@mathstodon.xyz
 (DIR) More posts by ddrake@mathstodon.xyz
 (DIR) Post #AyiUNIJvX2Ih41rzcm by ddrake@mathstodon.xyz
       2025-09-27T12:00:17Z
       
       0 likes, 1 repeats
       
       Achievement unlocked: I have ridden a bicycle with square wheels. This is from earlier this week at our department's "block party" for our majors and interested students.I'm proud (and a bit intimidated TBH) to work in the same department as Stan Wagon, the mathematician who made the square wheel bike -- and the surface on which you can ride it. https://stanwagon.com/https://www.macalester.edu/mscs/multimedia/squarewheeledbike/squarewheelbike/#HeyMac #macalestercollege #bicycling #catenary
       
 (DIR) Post #AyiUS3rohFh1gYziu8 by futurebird@sauropods.win
       2025-09-30T01:37:17Z
       
       0 likes, 0 repeats
       
       @ddrake Are those cycloids?
       
 (DIR) Post #AyqCN8iJ0PnfMIjEjg by ddrake@mathstodon.xyz
       2025-10-03T18:52:22Z
       
       0 likes, 0 repeats
       
       @futurebird Catenaries -- hyperbolic cosine, actually: https://www.sciencenews.org/article/riding-square-wheels