Radio

Radio is the wireless transmission of signals, by modulation of electromagnetic waves with frequencies below those of light.

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Radio waves are a form of electromagnetic radiation, created whenever a charged object accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum. This is the range from a few tens of hertz to a few hundred gigahertz.

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Other types of electromagnetic radiation, with frequencies above the RF range are infrared, visible light, ultraviolet, X-rays and gamma rays. Since the energy of an individual photon of radio frequency is too low to remove an electron from an atom, radio waves are classified as non-ionizing radiation.

Modulation: : For the musical use of "modulation", see modulation (music)....

Electromagnetic waves: REDIRECT Electromagnetic radiation...

Frequencies: REDIRECT frequency...

Radio related Images and Photos (experimental)

Radio	Radio Days	Radio Maxim	Radio Maxim
Radio-Craft: Tank	Radio Detective	Radio-Craft: Fighter Plane	Radio-Craft: Radio Waves Kill Plant Insects
Pirate Radio DVD (Widescreen)	Radio Broadcast: June 1925	Radio 4: Enemies Like This	Radio 4: Enemies Like This