Transcription of Non-Ionizing Radiations – Sources, Biological Effects ...
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Proceedings of the International Conference on Non-Ionizing radiation at UNITEN (ICNIR2003) Electromagnetic Fields and Our Health 20th 22nd October 2003 1 Non-Ionizing Radiations Sources, Biological Effects , Emissions and Exposures Kwan-Hoong Ng Department of Radiology University of Malaya Kuala Lumpur Malaysia ABSTRACT Non-Ionizing radiation (NIR) refers to radiative energy that, instead of producing charged ions when passing through matter, has sufficient energy only for excitation. Nevertheless it is known to cause Biological Effects . The NIR spectrum is divided into two main regions, optical Radiations and electromagnetic fields.
welding, and also lasers (IR). The application of laser as a coherent light source is increasing rapidly. Medical applications include UV and neonatal phototherapy, surgical and therapy lasers, physiotherapy heat lamps Electromagnetic fields Microwaves are used in telecommunications, radar/satellite links, mobile phones, microwave
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