long waves radio

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• Long Waves — Basse fréquence Pour les articles homonymes, voir BF et LF. La bande radioélectrique des basses fréquences ou LF (low frequency) est la partie du spectre radioélectrique de fréquence comprise entre 30 kHz et 300 kHz (longueur d onde de… …   Wikipédia en Français

• long waves — lengthy electromagnetic waves (over 1000 meters) for radio transmissions …   English contemporary dictionary

• Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …   Wikipedia

• Radio broadcasting — Long wave radio broadcasting station, Motala, Sweden …   Wikipedia

• long wave — noun a radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz) • Hypernyms: ↑radio wave, ↑radio emission, ↑radio radiation * * * long wave, adj. 1. Elect. an electromagnetic wave over 60 meters in length. 2. See …   Useful english dictionary

• Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …   Wikipedia

• Radio astronomy — is a subfield of astronomy that studies celestial objects at radio frequencies. The field originated from the discovery that many astronomical objects emit radiation in the radio wavelengths as well as optical ones. The great advances in radio… …   Wikipedia

• Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

• Radio waves — are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum. A common use is to transport information through the atmosphere or outer space without wires. Radio waves are distinguished from other kinds of… …   Wikipedia

• Radio Caroline — is a European radio station that started transmissions on Easter Sunday 1964 from a ship anchored in international waters off the coast of Felixstowe, Suffolk, England. [ [http://www.radiocaroline.co.uk/history2.asp Don t Get Mad, Get Even] ] It… …   Wikipedia

• Radio art — refers to the use of radio for art. Radio Art implies that the artist who works in, and with, radio is not necessarily a trained DJ, programmer, producer, engineer, or personality, but one who uses sound to make art and seeks ways to transit it… …   Wikipedia