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Radiation exists in both natural and man-made forms. There are two general
categories of radiation:
- Non-ionizing: Radiation that imparts enough energy to remove
electrons from one orbital shell to another of higher energy (e.g., microwaves,
ultraviolet light)
- Ionizing radiation: Radiation that has sufficient energy to
remove electrons from an atom (i.e., alpha and beta particles, gamma X-rays).
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