Final answer:
While 'Stinger' might reference military technology, the question likely pertains to the penetration power of radiation such as alpha and beta particles. Beta particles can pass through more material than alpha particles, and a thick wall of inert matter can provide protection. Shielding effectiveness depends on the wall's material, mass, and density.
Step-by-step explanation:
Radiation poses a significant threat due to the various levels of wall penetration by different types of particles. The wall penetration level of a radiation source like the Stinger missile, if that is what is implied here, is not typically discussed in academic settings as it is more relevant to military technology. However, if we are discussing radiation in the more general sense, the ability of alpha and beta particles to penetrate matter can be discussed in the context of safety from radiation.
Beta particles have a higher penetration power than alpha particles, meaning they can pass through more material. To protect oneself from these particles, a thick wall made from inert matter can be effective. It is important to note that the mass and density of the material used for shielding are crucial factors in determining its effectiveness against ionizing radiation.
When considering the safe thickness of a wall to protect against radiation, it also depends on the type and energy of the radiation. For instance, beta particles may be stopped by a few millimeters of metal, while gamma rays, which are not mentioned in the original question but another form of penetrating radiation, require much denser materials, like lead or several centimeters of concrete, to achieve effective shielding.