Terms beginning with R

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The transfer of energy by waves spreading through space or within any matter.קרא עוד >

An instrument, device or technological system that produces or may produce non-ionizing radiation during its operation.  Examples of radiation sources:  cordless phones, mobile phones, cellular base stations, broadcasting stations, power lines, transformer stations, etc.קרא עוד >

A segment of the electromagnetic spectrum with wavelengths longer than those of the infrared segment.  The range of RF, as defined by the International Telecommunications Union, is wide and ranges from 3 KHz to 300 GHz respectively. 

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Any attribute, characteristic or exposure of an individual that increases the likelihood of developing a disease or injury (source: WHO,קרא עוד >