Energy given out by disintegrating atoms during
radioactive decay. The energy may be in the form of fast-moving particles, known as
alpha particles and
beta particles, or in the form of high-energy electromagnetic waves known as
gamma radiation. Overlong exposure to atomic radiation can lead to
radiation sickness.
Radiation biology studies the effect of radiation on living organisms. Exposure to atomic radiation is linked to chromosomal damage, cancer, and, in laboratory animals at least, hereditary disease.
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