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Radiofrequency BackgroundWhat is radiofrequency energy (RF)?Radiofrequency (RF) energy is another name for radio waves. It is one form of electromagnetic energy which consists of waves of electric and magnetic energy moving together (radiating) through space. The area where these waves are found is called an electromagnetic field. Other forms of electromagnetic energy
Radio waves are created due to the movement of electrical charges in antennas. As they are created, these waves radiate away from the antenna at the speed of light. Waves are measured by
The frequency of an RF signal is usually expressed in units called hertz (Hz).
RF energy includes waves with frequencies ranging from about 3000 waves per second (3 kHz) to 300 billion waves per second (300 GHz). Microwaves are a subset of radio waves that have frequencies ranging from around 300 million waves per second (300 MHz) to three billion waves per second (3 GHz). How is radiofrequency energy used?Telecommunications
Microwave ovens Radar Industrial heaters and sealers
Medical uses
Updated October 14, 2008 |
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