The topic penetration is discussed in the following articles:

applications of gamma rays

  • TITLE: electromagnetic radiation (physics)
    SECTION: Gamma rays
    The great penetrating power of gamma rays stems from the fact that they have no electric charge and thus do not interact with matter as strongly as do charged particles. Because of their penetrating power gamma rays can be used for radiographing holes and defects in metal castings and other structural parts. At the same time, this property makes gamma rays extremely hazardous. The lethal effect...

Aufbau principle

  • TITLE: chemical bonding (chemistry)
    SECTION: Lithium through neon
    ...of the actual nuclear charge by the effect of the other electrons in the atom is referred to as the shielding of the nuclear charge. Next, it is necessary to note that a 2s electron can penetrate through the core (that is, have nonzero probability of being found closer to the nucleus than the bulk of the core electron density). If penetration occurs, the electron experiences the...

study of particle beams

  • TITLE: radiation (physics)
    SECTION: Range