11. The basic model considered the ball as being a spherical shell with isotropic material properties. 12. Several coil strips are mounted on great circles around the spherical shell of the gyrostabilized platform. 13. With a spherical shell , there is no net gravitational force on the sun due to the shell. 14. This was an additional puzzle, any X-ray emissions were expected to come from a spherical shell around the nucleus. 15. Spherical shell used time fuses, while rifled shell could use timed fuse or be detonated on impact by percussion fuse.16. The problem was that the shell had to fall a particular way and with spherical shells this could not be guaranteed. 17. Bernal's original proposal described a hollow spherical shell in diameter, with a target population of 20, 000 to 30, 000 people. 18. But two types of nuclei created in the Argonne experiments have revealed features that are inconsistent with the spherical shell model. 19. The basic computation thus attempts to find the shortest directed line tangent to four oblate spherical shells centred on four satellites. 20. We assume a fixed background for conceptual simplicity, construct a large spherical shell of mass, and set it spinning in that background.
