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In the context of, exposure is the exposure of living tissue of animals and humans to electromagnetic radiation. Since strong electromagnetic radiation can lead to adverse health effects, limits have been set for radiation exposure, as in the case of immission.

Exposure refers to magnetic, electric and electromagnetic radiation of employees in the frequency range from low frequency to microwaves with a frequency of 300 GHz. Corresponding electromagnetic radiation can lead to heat generation in tissue depending on the current density. The limits for electromagnetic radiation depend on the spatial conditions and the associated wave reflection.

In practice, it is a question of the energy flux density or field strength with which a living being is exposed. In mobile communications technology, the SAR value in watts per kilogram (W/kg) or the power density in watts per square meter (W/m2) have been used to define permissible values for exposure from base stations and cell phones. A distinction is made between whole-body exposure, as occurs with transmitting stations, and partial-body exposure, which occurs with cell phones.

The relevant accident prevention regulations for exposure and their limits are applied wherever radio technology, microwave technology, radar systems, induction ovens, generators, microwave ovens and other radio-emitting equipment are used. The areas of use are classified into exposure areas depending on the hazard assessment. Exposure area 1, for example, is a work area in which people are exposed for a limited period of time. In contrast, in exposure areas 2, only a low level of radiation from electromagnetic fields is to be expected, which is below the limit values.

Englisch: exposer
Updated at: 29.07.2020
#Words: 264
Links: indium (In), electromagnetic radiation (EMR), lead, immission, frequency (f)
Translations: DE

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