Electromagnetic waves such as radio waves are used in information transmission either as digital or analogy signals.
Electromagnetic waves are waves which are produced from the interactionof the electric and magnetic fields.
Transmitting data at lower frequencies enables the waves to travel longer distances than at higher frequencies, therefore scientists usually transmit data at a lower frequencies.
The limitations of transmitting information using electromagnetic waves include a limited number of broadcast frequencies and interference of waves.
Analog signals differ from digital signals in that analog signals have continuous electrical signals while digital signals have non-continuous electrical signals.
Digital signals over analog signals is that it transmits more information per second than analog signals Analog and digital signals are employed in mobile devices, television, radio, computers and the internet
A radio telescope is used to receive radio waves from astronomical radio sources in space.
It has several parts such as a dish and antenna,a receiver,a detector and an analyzer. The dish collects and focuses radio signals on the antenna and the information is processed by the receiver, detector and analyzer.
Radios waves are used for the transmission of radio and television signals.
Radio telescopes convert radio waves which are analog signals to electrical signals wgich are digital siagnals because it can be easily stored and transmitted in digital form.
Therefore, electromagnetic waves such as radio waves are used in information transmission.
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