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Sagot :
Answer:
Electromagnetic waves.
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
Antenna size of TVs and cell phones is related to the size of the electromagnetic waves used by the technology.
This ultimately implies that, size of the electromagnetic waves plays a significant role in choosing the appropriate size for antennas used in all telecommunications device such as television, mobile phone, radio, satellite, etc.
Generally, the most commonly used electromagnetic wave technology in telecommunications is radio waves.
Radio waves can be defined as an electromagnetic wave that has its frequency ranging from 30 GHz to 300 GHz and its wavelength between 1mm and 3000m. Therefore, radio waves are a series of repetitive valleys and peaks that are typically characterized of having the longest wavelength in the electromagnetic spectrum.
Basically, as a result of radio waves having long wavelengths, they are mainly used in long-distance communications such as the carriage and transmission of data.
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