The Plastic Ratio - Numberphile

Ed Harriss discusses the plastic ratio - more amazing than the golden ratio? You decide! More links & stuff in full description below ↓↓↓ See our golden ratio videos: Previous video with Ed (Heesch Numbers): Ed Harriss is online at and on Twitter at The Plastic Ratio Callipers were made by Eugene Sergeant: Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. And support from Math For America - NUMBERPHILE Website: Numberphile on Facebook: Numb