8. demonstrate on the cover of ray tube in plain metal plate shown in physical space for the source and the amount of the total candidate (inner * added).
8. Prove on the cover of X-tube in a clear place of a metal plate showing the actual space of the source of the rays and the amount of kidney candidate (internal * Added).
VIII. Show on the cover of the radiation tube in place clear metal panel is shown where the surface area of the actual beam Lmnb and kidney candidate * added (internal).