Can anybody explain to me why people say you should wrap your roids in a Carbon Copy in case you want to ship it. I find it hard to believe that X-ray won't go through a carbon copy. Basically the higher the atomic number in the periodic table the more shade and object gets under the X-ray machine, for example X-ray can't penetrate lead because it's atomic number is 82. But carbon has an atomic number of only 6, I would really appreciate it if someone could clarify this matter for me.