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Terminological database |
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Following the links provided within each record, it is possible to access the legal texts which regulate the concept under examination, the concept diagrams in which it appears, as well as other linguistically or conceptually correlated terminological records.
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Far field |
Domain: Health and safety at work => Risk factors => Radiations
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| Grammatical category: | Noun phrase |
| Grammar notes: | Countable |
| Definition: | The region where the distance from a radiating antenna exceeds the wavelength of the radiated EMF; in the far-field, field components ( E and H) and the direction of propagation are mutually perpendicular, and the shape of the field pattern is independent of the distance from the source at which it is taken. |
| Definition source: | Guidelines for limiting exposure to time-varying electric, magnetic and electro-magnetic fields (up to 300 GHz)" - International Commission on Non-Ionizing Radiation Protection (ICNIRP) |
| European legislation: | Amendment Directive 2004/40/CE, Recommendations 1999/512/EC, 1999/519/EC |
| British legislation: | The Ionising Radiations Regulations 1999 |
| Variants: | Far-field |
| Related terms: | |
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