Geodesic grids used in geodesy also have the geometry of geodesic polyhedra. "Geodesic domes" are the upper portion of geodesic spheres. Fuller referred to these buildings as monolithic ferroconcrete geodesic domes. These are the normal curvature, geodesic curvature and geodesic torsion. The name was a homage to Buckminster Fuller, whose geodesic domes it resembles. The Zometool kits for making geodesic domes and other polyhedra use slotted balls as connectors. The tangent vector to an affine geodesic is parallel and equipollent along itself. The architect of this geodesic dome was Buckminster Fuller. This generalizes the notion of geodesic for Riemannian manifolds. See also List of geodesic polyhedra and Goldberg polyhedra. International recognition began with the success of huge geodesic domes during the 1950s. The park is represented by Spaceship Earth, a geodesic sphere. Lagrange equation directly, and thus obtain a set of equations equivalent to the geodesic equations. It is an example of a geodesic dome. The differential equations for the geodesic can be solved numerically.