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On a fiber-optic line: light. That's the only kind of energy that passes through the fiber. On wires: electrical signals in the form of AC currents. Without wires or anything else to carry the info: electromagnetic waves, such as for example -- radio, TV, microwave, infra-red or visible light beam. Some advantages of electromagnetic signalling are: -- easy to generate, and to impress information onto it -- easy to radiate and detect over great distances using small amounts of power -- easy to focus the available power in the desired direction of communication -- easy to separate the signal you want out of the flood of signals from thousands of other people all using the same technology to communicate -- no expense or physical infrastructure required between the end-points (running fiber via satellites would be difficult and expensive)
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What is the name of satellites used for intercontinental communication?
Comsat
How are satellites used for mobile communication?
difficult to say
Do computers use radio waves?
Absolutely. Computing is highly integrated into radio frequency (RF) type communications. Examples of RF integration include Bluetooth, WiFi, and RF peripherals such as the mouse and keyboard.
The development of communication from world war 2 till today?
Communication since WW2 has been enhanced by satellites, optical fibre cables, the Internet, WWW software and cheap computers.
What method of signal transmission uses radio waves to carry signals?
The analog method of signal transmission uses radio waves to carry signals. Digital transmission involves the use of satellites to transmit signals.
Do satellites use electromagnetic waves for communication?
Yes. We call the waves "radio".
What is frequency of a satellite wave?
I never heard of a "satellite wave". If you mean the radio waves used by satellites for communication - well, like all radio waves used for such purposes, there is probably a large range of waves they can use.
Why aren't ultraviolet waves not used to transmit signals to and from communication satellites?
Because they are of the highest frequencies in the known electromagnetic spectrum. This means their wavelength are very short, which means they will not travel very far, as opposed to low-frequency RF waves. In comparison, the same idea applies to vehicle taillights and why they're colored red (the color red has the longest wavelength in visible light and it will be visible even from a long distance).
Are radio waves used to communicate with satellites?
Yes
What is the name of satellites used for intercontinental communication?
Comsat
How are satellites used for mobile communication?
difficult to say
What is the purpose of having communication satellites?
The purpose for having communication satellites in space, is by providing telecommunication throughout the world. Communication satellites are mostly used for mobile phone signals, weather tracking, and broadcasting television programs.
What are the various communication facilities that can be used during disasters?
radios,satellites, satellites phones,ham radio are the various communication facilities during disasters
What are artifical satellites used for?
Communication Navigation Meteorology Spying
Does communication satellites transmit UV rays?
No. No point, radio waves have much better range than UV rays.
What is waves used for?
radio waves are used in tv communication, weather broadcasting
How do communication satellites get into orbit?
Communication satellites are lifted into orbit by rockets.
