https://boingboing.net/2018/04/02/dual-polyhedron.html
"The Hoberman Switch Pitch Throwing Ball is a $12 toy that instantiates
a dual polyhedron: every time you throw it, it turns inside-out; there's
a wealth of scientific literature that explains how this works,
including this open-access paper from the
Journal of the International
Association for Shell and Spatial Structures."
Fun! Via Kam-Yung Soh.
Share and enjoy,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://www.xanadu.com.au/ Chief Scientist, Xanadu
http://www.glasswings.com.au/ Partner, Glass Wings
http://www.sericyb.com.au/ Manager, Serious Cybernetics
