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Liberty Science Center :: Check out the original patent for the Hoberman Sphere
Hoberman Sphere | physics | Hoberman Sphere: http://physicstoys.blogspot.com/p/physics-toy-store.html Isokinetic structure. This special assembly of fold-able linkages consisting... | By PhysicsfunFacebook
A Giant, Working Hoberman Sphere Made From Aluminum
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Meccano Miscellany: The Hoberman sphere
World's Largest Hoberman Sphere – Tartu, Estonia - Atlas Obscura