18 August (Syria ) within release The 100th Anniversary of the Radio goes into circulation Stamp The 100th Anniversary of the Radio face value 17 Syrian pound
Stamp The 100th Anniversary of the Radio in catalogues | |
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Michel: | Mi:SY 1976 |
Stanley Gibbons: | Sg:SY 1960 |
Stamp Number: | Sn:SY 1372 |
Stamp is square format.
Stamp The 100th Anniversary of the Radio it reflects the thematic directions:
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave. They can be received by other antennas connected to a radio receiver, this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.