What does the term "external exposure" refer to?

The term "external exposure" specifically refers to the radiation that comes from sources located outside the body. This form of exposure can occur in various environments where radiation-emitting materials or devices are present. For instance, individuals working in medical facilities, nuclear power plants, or research laboratories may encounter external sources of radiation, such as gamma rays or x-rays, that can penetrate the body and potentially cause biological effects.

Understanding external exposure is crucial for radiological workers, as it informs necessary safety measures and monitoring protocols to minimize risks associated with radiation. Workers are trained to use protective equipment, limit time spent near sources, and maximize distance from potential radiation sources to reduce exposure. The focus of safety and health regulations contains guidelines to measure and manage this type of exposure effectively to protect both workers and the public.