Electromagnetic wavesElectromagnetic waves are normally generated by equipment and antennas used in mobile telephony, mobile data communication, WiFi, WiMax, DECT cordless phones, terrestrial digital television (TDT), shared-resource radiotelephony and radars. |
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RadioactivityRadioactivity inside buildings mainly comes from the ground and certain building or decoration materials, such as basalts or granites, some ceramics and concretes and certain types of stone. |
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Geological disturbances
Geological disturbances cause distortions in the Earth’s magnetic field. Environmental radiation and the Earth's natural magnetic field increase, decrease or are altered by the presence of groundwater, geological faults, cracks in the ground, areas of contact between different types of materials, caves, metalliferous deposits and decomposing matter, among other phenomena. |
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Electromagnetic fieldsAlternating electromagnetic fields are usually generated by electrical installations in homes and offices, cables, appliances, motors, power points, false ceilings and raised floors containing electrics, high and medium voltage lines, and urban transformers. |
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Static electric fieldsStatic electric fields are generated in carpets, curtains, textiles and wallpapers containing synthetic materials, lacquers or coatings, etc. |
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Static magnetic fieldsStatic magnetic fields are generated by the metal components of beds, mattresses, furniture, equipment, beams and other ferromagnetic elements used in construction. |
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