Geiger Counters will register one click whenever they detect a ray or particle of radiation hitting them. These tiny high speed bundles of energy are like short bursts of light. Some are extremely energetic, while others are not. Geiger Counters cannot determine the energy of the impinging ray, they only detect its presence. The compensation figure for radiation of this type is difficult to estimate, due to the extreme range of energies that have been measured.
All matter is composed of atoms.
Atoms alone and bonded together in molecules form all the things around us, including ourselves. Electrons are extremely light, negatively charged particles that exist as a cloud around the center, or nucleus, of the atom. Sometimes the electrons are said to occupy orbits around the nucleus. These electrons are attracted to the nucleus because of the positively charged protons that, along with the neutrons, make up the nucleus. Atoms bond together in molecules when one atom gives up or shares an electron with another atom.