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Radio Wave

By November 25, 2022No Comments

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as three hundred gigahertz to as low as thirty hertz. They are generated by electric charges undergoing acceleration, such as time-varying electric currents. Naturally occurring radio waves include radio emissions from lightning and astronomical objects such as pulsars and quasars.

Artificial radio waves are used for radar, cell phones, satellite communication including GPS, broadcast television and radio, Wireless LANs, and Bluetooth networking. This usage often includes microwave ovens for cooking food. Radio wave surgery is also used in some cancer treatments to kill tumor cells using heat created by the absorption of energy from the RF field.

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