| Just beneath the surface of receptacles are spherical cavities called conceptacles where gametes are produced. |
| He also considered curves of double curvature on the sphere and the quadrature of parts of a spherical surface. |
| Menelaus's work formed the basis for Ptolemy's numerical solutions of spherical astronomy problems in the Almagest. |
| In Treatise on the quadrilateral al-Tusi gave the first extant exposition of the whole system of plane and spherical trigonometry. |
| A single very small spherical shell is characterized by a lumpy to ragged surface and numerous short spines. |
| In our present paper, we added a spherical nanoparticle interacting attractively with the hydrophilic segments of amphiphilic molecules. |
