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Communications Revolution |
Communications Networks |
Optical Fibres |
Photonic Devices |
Future of Communications | Credits |
Carrying signals by radio waves was made possible by Marconi and opened the possibility to new ways of transmitting signals over the air.
Today microwaves are used in telecommunications quite intensively with for instance cellular phones.
Microwaves travel in straight line: microwave repeaters fitted with parabolic "dishes" make sure that the signals are relayed and strengthened to reach their final destination.