EMRTC Office Complex
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EMRTC Office Complex

m--the atom radiates pa

rticles and rays. Health physicists are concerned with four emissions from the nucleus of these atoms. One of these radiations is the alpha particle which is relatively large and travels fairly slowly compared to other atomic particles. Alpha particles are composed of two protons and two neutrons. They travel a

bout one to three inches in the air and are easily stopped by a sheet of paper. Another radiation is the beta particle, basically a very light electron that moves at less than the speed of light. These particles are more energetic than alpha particles, but can be stopped

by a thin sheet of metal or heavy clothing. The third form of nuclear radiation is the gamma ray. This is a type of electromagnetic radiation like visible li

tium and Plutonium. Sources for information about radiation