Other forms include the earth’s magnetic field and magnetic field exposure from proximity to transmission lines, household wiring and electrical appliances. Microwave ovens, global positioning systems, cellular telephones, television stations, FM and AM radio, baby monitors, cordless phones, garage-door openers and ham radios all use non-ionizing radiation. This form of radiation does not carry enough energy to ionize atoms or molecules. People use and are exposed to non-ionizing radiation sources every day. Radiation can be described as being one of two basic types: non ionizing and ionizing. Radiation occurs when energy is emitted by a source, then travels through a medium, such as air, until it is absorbed by matter.
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