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radio wave

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radio wave

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Radio waves lie at the low-frequency end of the electromagnetic spectrum. They are primarily used …
(credit: © Merriam-Webster Inc.)
Wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. The wavelengths of radio waves range from thousands of metres to around 30 cm. These correspond to frequencies as low as 3 Hz and as high as 1 gigahertz (109 Hz). Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space. They are used in standard broadcast radio and television, short-wave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys.

radio wave

See RF.

radio wave [′rād·ē·ō ‚wāv]
(electromagnetism)
An electromagnetic wave produced by reversal of current in a conductor at a frequency in the range from about 10 kilohertz to about 300,000 megahertz.


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Other fields of study include radio wave propagation and wireless technology on therapeutic instruments.
NICT Establishes ICT Consortium for Research and Development of ... by JCNN News Summaries
6Mbps and other features such as flexible and variable transmission speed control in various radio wave environments.
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Polarization studies don't provide a more penetrating view in the way that a radio wave or infrared detector can peer through dust.
A penetrating look by Heaton, Hal / Science News
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