THE GÖMBÖC
Jun. 19th, 2008 11:22 pmhttp://www.gomboc.eu/site.php?inc=0&menuId=8
http://en.wikipedia.org/wiki/Gomboc
Convexity and homogeneity are crucial properties of Gömböc. Weebles are straightforward examples of inhomogenous objects with Gömböc-type behaviour. Similarly, it is easy to create homogenous but concave Gömböc-like forms due to the fact that concave bodies cannot roll on all points of their circumference.
Shapes with a unique stable equilibrium are called monostatic; those with only one additional unstable point are referred to as mono-monostatic. Thus the Gömböc is the first convex, homogenous, mono-monostatic object.
http://en.wikipedia.org/wiki/Gomboc
Gömb in Hungarian means "sphere", and gömböc refers to a sphere-like object. (It is mostly known in the folk culture as kis gömböc, a round creature in the loft that remained from a killed pig, which swallows everyone one after the other who goes to see what happened to the previous ones.[4])
