Spherical shellFrom Wikipedia, the free encyclopedia In geometry, a spherical shell is a generalization of an annulus to three dimensions. It is the region of a ball between two concentric spheres of differing radii.[1] spherical shell, right: two halves
In geometry, a spherical shell is a generalization of an annulus to three dimensions. It is the region of a ball between two concentric spheres of differing radii.[1] spherical shell, right: two halves